Codeforces Solutions

Codeforces problem solutions with full editorial. 447 contests, 1823 problems, 1297 verified.

448 items

Codeforces Solutions

Each problem comes with a full written editorial: problem analysis, approach comparison, algorithm walkthrough, Python solution with explanation, worked examples, and edge cases. The problem statement itself is not reproduced here. Follow the CF link on each problem page to read the original.

447 contests, 1823 problems, 1297 verified.

Contest Name Type Rating Range Verified Time
1 Codeforces Beta Round 1 Beta 1000-2100 3/3 10m 36s
2 Codeforces Beta Round 2 Beta 1500-2600 2/3 5m 52s
3 Codeforces Beta Round 3 Beta 1000-2600 4/4 14m 42s
4 Codeforces Beta Round 4 (Div. 2 Only) Div. 2 800-1700 4/4 4m 57s
5 Codeforces Beta Round 5 Beta 1000-2400 5/5 5m 59s
6 Codeforces Beta Round 6 (Div. 2 Only) Div. 2 900-2600 5/5 7m 21s
7 Codeforces Beta Round 7 Beta 1100-2600 5/5 5m 10s
8 Codeforces Beta Round 8 Beta 1200-2600 5/5 6m 59s
9 Codeforces Beta Round 9 (Div. 2 Only) Div. 2 800-2300 5/5 8m 20s
10 Codeforces Beta Round 10 Beta 900-2800 4/5 8m 3s
11 Codeforces Beta Round 11 Beta 900-2800 5/5 8m 46s
12 Codeforces Beta Round 12 (Div 2 Only) Beta 800-2400 5/5 6m 41s
13 Codeforces Beta Round 13 Beta 1000-2700 5/5 7m 43s
14 Codeforces Beta Round 14 (Div. 2) Div. 2 800-1900 5/5 7m 42s
15 Codeforces Beta Round 15 Beta 1200-2600 5/5 11m 13s
16 Codeforces Beta Round 16 (Div. 2 Only) Div. 2 800-1900 5/5 7m 6s
17 Codeforces Beta Round 17 Beta 1000-2900 4/5 16m 51s
18 Codeforces Beta Round 18 (Div. 2 Only) Div. 2 1200-2000 5/5 7m 50s
19 Codeforces Beta Round 19 Beta 1400-2900 5/5 16m 37s
20 Codeforces Alpha Round 20 (Codeforces format) Special 1700-2000 3/3 4m 1s
21 Codeforces Alpha Round 21 (Codeforces format) Special 1900-2400 3/4 5m 6s
22 Codeforces Beta Round 22 (Div. 2 Only) Div. 2 800-2300 4/5 7m 39s
23 Codeforces Beta Round 23 Beta 1200-2600 4/5 11m 15s
24 Codeforces Beta Round 24 Beta 1400-2400 5/5 11m 12s
25 Codeforces Beta Round 25 (Div. 2 Only) Div. 2 1100-2200 5/5 6m 12s
26 Codeforces Beta Round 26 (Codeforces format) Beta 900-2400 4/5 7m 38s
27 Codeforces Beta Round 27 (Codeforces format, Div. 2) Div. 2 1200-2200 4/5 6m 38s
28 Codeforces Beta Round 28 (Codeforces format) Beta 1600-2800 4/5 8m 33s
29 Codeforces Beta Round 29 (Div. 2, Codeforces format) Div. 2 1000-2400 3/5 6m 47s
30 Codeforces Beta Round 30 (Codeforces format) Beta 1400-2800 4/5 7m 26s
31 Codeforces Beta Round 31 (Div. 2, Codeforces format) Div. 2 1200-2400 4/5 6m 52s
32 Codeforces Beta Round 32 (Div. 2, Codeforces format) Div. 2 800-2400 5/5 6m 58s
33 Codeforces Beta Round 33 (Codeforces format) Beta 1200-2600 4/5 18m 29s
34 Codeforces Beta Round 34 (Div. 2) Div. 2 800-2000 5/5 7m 19s
35 Codeforces Beta Round 35 (Div. 2) Div. 2 1000-2100 5/5 7m 52s
36 Codeforces Beta Round 36 Beta 1300-2600 2/5 9m 36s
37 Codeforces Beta Round 37 Beta 1000-2600 4/5 8m 37s
38 School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) Beta 800-2400 5/8 13m 48s
39 School Team Contest 1 (Winter Computer School 2010/11) Special 1100-2600 9/11 23m 20s
40 Codeforces Beta Round 39 Beta 1300-2600 5/5 7m 51s
41 Codeforces Beta Round 40 (Div. 2) Div. 2 800-1900 3/5 7m 28s
42 Codeforces Beta Round 41 Beta 1400-2700 4/5 10m 20s
43 Codeforces Beta Round 42 (Div. 2) Div. 2 1000-2300 5/5 9m 18s
44 School Team Contest 2 (Winter Computer School 2010/11) Special 900-2700 6/10 21m 26s
45 School Team Contest 3 (Winter Computer School 2010/11) Special 900-2500 7/10 19m 28s
46 School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round 43 (ACM-ICPC Rules) Beta 800-2500 6/7 10m 14s
47 Codeforces Beta Round 44 (Div. 2) Div. 2 800-2200 3/5 8m 58s
48 School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules) Beta 900-2800 6/8 15m 12s
49 Codeforces Beta Round 46 (Div. 2) Div. 2 800-2300 5/5 8m 21s
50 Codeforces Beta Round 47 Beta 800-2300 4/5 6m 55s
51 Codeforces Beta Round 48 Beta 1300-2800 4/6 13m 36s
52 Codeforces Testing Round 1 Special 900-2200 3/3 5m 34s
53 Codeforces Beta Round 49 (Div. 2) Div. 2 1100-2500 4/5 13m 28s
54 Codeforces Beta Round 50 Beta 1300-2700 5/5 8m 47s
55 Codeforces Beta Round 51 Beta 1200-2500 3/5 10m 12s
56 Codeforces Beta Round 52 (Div. 2) Div. 2 1000-2200 5/5 8m 47s
57 Codeforces Beta Round 53 Beta 1300-3000 5/5 8m 25s
58 Codeforces Beta Round 54 (Div. 2) Div. 2 1000-2400 3/5 7m 51s
59 Codeforces Beta Round 55 (Div. 2) Div. 2 800-2000 3/5 8m 58s
60 Codeforces Beta Round 56 Beta 1300-2600 4/5 11m 17s
61 Codeforces Beta Round 57 (Div. 2) Div. 2 800-2000 5/5 14m 51s
62 Codeforces Beta Round 58 Beta 1300-2700 4/5 8m 15s
63 Codeforces Beta Round 59 (Div. 2) Div. 2 900-2000 4/5 8m 47s
64 Unknown Language Round 1 Special 1300-2400 9/9 14m 26s
65 Codeforces Beta Round 60 Beta 1700-2900 3/5 11m 31s
66 Codeforces Beta Round 61 (Div. 2) Div. 2 1100-2000 3/5 9m 20s
67 Manthan 2011 Special 1800-2600 5/5 9m 26s
68 Codeforces Beta Round 62 Beta 1100-2900 5/5 26m 18s
69 Codeforces Beta Round 63 (Div. 2) Div. 2 1000-2000 5/5 9m 17s
70 Codeforces Beta Round 64 Beta 1300-2700 4/5 11m 7s
71 Codeforces Beta Round 65 (Div. 2) Div. 2 800-2200 4/5 8m 23s
72 Unknown Language Round 2 Special 1000-2300 8/9 21m 37s
73 Codeforces Beta Round 66 Beta 1600-2900 6/6 12m 59s
74 Codeforces Beta Round 68 Beta 1000-2800 4/5 22m 53s
75 Codeforces Beta Round 67 (Div. 2) Div. 2 1000-2400 4/5 9m 31s
76 All-Ukrainian School Olympiad in Informatics Special 1700-2700 5/6 12m 33s
77 Codeforces Beta Round 69 (Div. 1 Only) Div. 1 1400-2800 2/5 11m 16s
78 Codeforces Beta Round 70 (Div. 2) Div. 2 800-2300 4/5 12m 16s
79 Codeforces Beta Round 71 Beta 1200-2900 5/5 7m 45s
80 Codeforces Beta Round 69 (Div. 2 Only) Div. 2 800-1200 2/2 2m 56s
81 Yandex.Algorithm Open 2011: Qualification 1 Special 1400-2700 3/5 13m 8s
82 Yandex.Algorithm 2011: Qualification 2 Special 1100-2600 4/5 11m 32s
83 Codeforces Beta Round 72 (Div. 1 Only) Div. 1 1300-2800 5/5 9m 17s
84 Codeforces Beta Round 72 (Div. 2 Only) Div. 2 900-1700 1/2 4m 27s
85 Yandex.Algorithm 2011: Round 1 Special 1300-2600 5/5 11m 13s
86 Yandex.Algorithm 2011: Round 2 Special 1600-2700 5/5 11m 50s
87 Codeforces Beta Round 73 (Div. 1 Only) Div. 1 1500-2600 5/5 9m 48s
88 Codeforces Beta Round 73 (Div. 2 Only) Div. 2 1200-1500 2/2 2m 30s
89 Codeforces Beta Round 74 (Div. 1 Only) Div. 1 1800-2900 4/5 12m 50s
90 Codeforces Beta Round 74 (Div. 2 Only) Div. 2 1000-1100 2/2 3m 17s
91 Codeforces Beta Round 75 (Div. 1 Only) Div. 1 1500-2600 5/5 12m 45s
92 Codeforces Beta Round 75 (Div. 2 Only) Div. 2 800-1300 2/2 4m 34s
93 Codeforces Beta Round 76 (Div. 1 Only) Div. 1 1700-2600 3/5 10m 8s
94 Codeforces Beta Round 76 (Div. 2 Only) Div. 2 900-1300 2/2 3m 35s
95 Codeforces Beta Round 77 (Div. 1 Only) Div. 1 1600-2500 5/5 7m 52s
96 Codeforces Beta Round 77 (Div. 2 Only) Div. 2 900-1300 2/2 6m 15s
97 Yandex.Algorithm 2011: Finals Special 2200-2700 4/5 11m 24s
98 Codeforces Beta Round 78 (Div. 1 Only) Div. 1 1700-2700 5/5 10m 13s
99 Codeforces Beta Round 78 (Div. 2 Only) Div. 2 800-1300 2/2 2m 45s
100 Unknown Language Round 3 Special 1100-2400 10/10 23m 31s
101 Codeforces Beta Round 79 (Div. 1 Only) Div. 1 1200-2500 4/5 11m 56s
102 Codeforces Beta Round 79 (Div. 2 Only) Div. 2 1000-1200 2/2 3m 36s
103 Codeforces Beta Round 80 (Div. 1 Only) Div. 1 1100-2900 3/5 10m 20s
104 Codeforces Beta Round 80 (Div. 2 Only) Div. 2 800-800 1/1 1m 14s
105 Codeforces Beta Round 81 Beta 1700-2700 4/5 13m 32s
106 Codeforces Beta Round 82 (Div. 2) Div. 2 1000-2100 4/5 13m 18s
107 Codeforces Beta Round 83 (Div. 1 Only) Div. 1 1400-2700 5/5 11m 41s
108 Codeforces Beta Round 83 (Div. 2 Only) Div. 2 1000-1400 2/2 9m 3s
109 Codeforces Beta Round 84 (Div. 1 Only) Div. 1 1000-2700 5/5 11m 6s
110 Codeforces Beta Round 84 (Div. 2 Only) Div. 2 800-1100 2/2 5m 34s
111 Codeforces Beta Round 85 (Div. 1 Only) Div. 1 1400-2900 3/5 12m 59s
112 Codeforces Beta Round 85 (Div. 2 Only) Div. 2 800-1200 2/2 3m 19s
113 Codeforces Beta Round 86 (Div. 1 Only) Div. 1 1600-2700 5/5 15m 15s
114 Codeforces Beta Round 86 (Div. 2 Only) Div. 2 1000-1500 2/2 4m 17s
115 Codeforces Beta Round 87 (Div. 1 Only) Div. 1 900-2600 3/5 11m 15s
116 Codeforces Beta Round 87 (Div. 2 Only) Div. 2 800-1100 2/2 4m 3s
117 Codeforces Beta Round 88 Beta 1300-2900 5/5 13m 35s
118 Codeforces Beta Round 89 (Div. 2) Div. 2 1000-2000 4/5 10m 4s
119 Codeforces Beta Round 90 Beta 800-2500 4/5 9m 34s
120 School Regional Team Contest, Saratov, 2011 Special 1000-2200 8/10 16m 31s
121 Codeforces Beta Round 91 (Div. 1 Only) Div. 1 1100-2500 5/5 9m 56s
122 Codeforces Beta Round 91 (Div. 2 Only) Div. 2 1000-1000 2/2 2m 30s
123 Codeforces Beta Round 92 (Div. 1 Only) Div. 1 1300-2500 3/5 14m 53s
124 Codeforces Beta Round 92 (Div. 2 Only) Div. 2 1000-1400 2/2 3m 1s
125 Codeforces Testing Round 2 Special 1000-1600 2/3 5m 4s
126 Codeforces Beta Round 93 (Div. 1 Only) Div. 1 1700-1900 2/2 4m 5s
127 Codeforces Beta Round 93 (Div. 2 Only) Div. 2 900-1000 2/2 3m 25s
128 Codeforces Beta Round 94 (Div. 1 Only) Div. 1 1500-2900 5/5 8m 36s
129 Codeforces Beta Round 94 (Div. 2 Only) Div. 2 900-1200 2/2 3m 59s
130 Unknown Language Round 4 Special 900-2300 10/10 16m 22s
131 Codeforces Beta Round 95 (Div. 2) Div. 2 1000-2000 5/6 10m 6s
132 Codeforces Beta Round 96 (Div. 1) Div. 1 1300-2700 3/5 9m 16s
133 Codeforces Beta Round 96 (Div. 2) Div. 2 900-1200 2/2 2m 34s
134 Codeforces Testing Round 3 Special 1200-2200 2/3 5m 24s
135 Codeforces Beta Round 97 (Div. 1) Div. 1 1300-3000 5/5 9m 14s
136 Codeforces Beta Round 97 (Div. 2) Div. 2 800-1100 2/2 2m 54s
137 Codeforces Beta Round 98 (Div. 2) Div. 2 900-2000 5/5 7m 45s
138 Codeforces Beta Round 99 (Div. 1) Div. 1 1600-2900 4/5 9m 53s
139 Codeforces Beta Round 99 (Div. 2) Div. 2 1000-1600 2/2 2m 53s
140 Codeforces Round 100 Special 1700-2600 3/6 12m 15s
141 Codeforces Round 101 (Div. 2) Div. 2 800-2300 4/5 10m 27s
142 Codeforces Round 102 (Div. 1) Div. 1 1600-3000 5/5 13m 21s
143 Codeforces Round 102 (Div. 2) Div. 2 1000-1200 2/2 4m 38s
144 Codeforces Round 103 (Div. 2) Div. 2 800-2200 5/5 8m 5s
145 Codeforces Round 104 (Div. 1) Div. 1 1200-2900 4/5 10m 29s
146 Codeforces Round 104 (Div. 2) Div. 2 800-1300 2/2 2m 40s
147 Codeforces Testing Round 4 Special 1300-2500 2/2 2m 45s
148 Codeforces Round 105 (Div. 2) Div. 2 800-1900 3/5 9m 21s
149 Codeforces Round 106 (Div. 2) Div. 2 900-2300 4/5 8m 2s
150 Codeforces Round 107 (Div. 1) Div. 1 1400-3000 4/5 11m 8s
151 Codeforces Round 107 (Div. 2) Div. 2 800-1200 2/2 3m 17s
152 Codeforces Round 108 (Div. 2) Div. 2 900-2600 4/5 9m 28s
153 Surprise Language Round 5 Special 1600-2200 4/5 6m 19s
154 Codeforces Round 109 (Div. 1) Div. 1 1600-2400 4/4 6m 30s
155 Codeforces Round 109 (Div. 2) Div. 2 800-1100 1/2 5m 59s
157 Codeforces Round 110 (Div. 2) Div. 2 800-1000 2/2 4m 38s
158 VK Cup 2012 Qualification Round 1 Special 800-1900 5/5 7m 26s
159 VK Cup 2012 Qualification Round 2 Special 1100-1700 5/5 8m 47s
160 Codeforces Round 111 (Div. 2) Div. 2 900-2400 5/5 8m 5s
161 VK Cup 2012 Round 1 Special 1300-2500 5/5 11m 9s
162 VK Cup 2012 Wild-card Round 1 Special 1100-2000 9/10 16m 36s
163 VK Cup 2012 Round 2 Special 1700-2900 2/5 9m 14s
164 VK Cup 2012 Round 3 Special 1700-3100 3/5 9m 50s
165 Codeforces Round 112 (Div. 2) Div. 2 1000-2200 4/5 8m 54s
166 Codeforces Round 113 (Div. 2) Div. 2 1100-2500 5/5 11m 49s
167 Codeforces Round 114 (Div. 1) Div. 1 1600-3000 3/5 10m 57s
168 Codeforces Round 114 (Div. 2) Div. 2 900-900 1/1 2m 1s
169 VK Cup 2012 Round 2 (Unofficial Div. 2 Edition) Div. 2 800-1100 2/2 2m 57s
171 April Fools Day Contest April Fools 1200-2000 6/7 14m 48s
172 Croc Champ 2012 - Qualification Round Special 800-2200 4/5 11m 42s
173 Croc Champ 2012 - Round 1 Special 1300-2600 3/5 10m 55s
174 VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) Div. 2 1100-1800 3/3 6m 56s
175 Codeforces Round 115 Special 1400-3000 5/5 9m 1s
176 Croc Champ 2012 - Round 2 Special 1200-3100 4/4 6m 33s
177 ABBYY Cup 2.0 - Easy Special 800-2600 10/11 24m 43s
178 ABBYY Cup 2.0 - Hard Special 1000-2300 10/12 24m 40s
180 Codeforces Round 116 (Div. 2, ACM-ICPC Rules) Div. 2 1200-2300 5/5 8m 3s
181 Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) Div. 2 800-1300 2/2 4m 22s
182 Codeforces Round 117 (Div. 2) Div. 2 1000-2200 4/5 11m 48s
183 Croc Champ 2012 - Final Special 1700-2900 5/5 10m 12s
185 Codeforces Round 118 (Div. 1) Div. 1 1300-2600 3/4 6m 44s
186 Codeforces Round 118 (Div. 2) Div. 2 1100-1200 2/2 6m 28s
187 Codeforces Round 119 (Div. 1) Div. 1 1500-2900 4/5 10m 3s
188 Surprise Language Round 6 Special 1300-1400 4/4 6m 43s
189 Codeforces Round 119 (Div. 2) Div. 2 1300-1300 2/2 4m 24s
190 Codeforces Round 120 (Div. 2) Div. 2 1100-1900 4/4 6m 10s
191 Codeforces Round 121 (Div. 1) Div. 1 1500-2700 5/5 8m 55s
192 Codeforces Round 121 (Div. 2) Div. 2 1100-1300 0/2 3m 47s
193 Codeforces Round 122 (Div. 1) Div. 1 1700-2900 3/4 8m 3s
194 Codeforces Round 122 (Div. 2) Div. 2 900-1200 2/2 2m 59s
195 Codeforces Round 123 (Div. 2) Div. 2 1000-2000 3/4 5m 40s
196 Codeforces Round 124 (Div. 1) Div. 1 1100-2600 3/4 6m 40s
197 Codeforces Round 124 (Div. 2) Div. 2 1400-1600 2/2 2m 55s
198 Codeforces Round 125 (Div. 1) Div. 1 1700-2700 1/3 6m 48s
199 Codeforces Round 125 (Div. 2) Div. 2 900-1900 1/2 3m 12s
200 Codeforces Round 126 (Div. 2) Div. 2 800-2400 3/3 7m 2s
201 Codeforces Round 127 (Div. 1) Div. 1 1700-2600 4/5 7m 7s
202 Codeforces Round 127 (Div. 2) Div. 2 800-1700 2/2 4m 35s
203 Codeforces Round 128 (Div. 2) Div. 2 1200-2300 4/5 6m 39s
204 Codeforces Round 129 (Div. 1) Div. 1 1500-2800 4/5 5m 54s
205 Codeforces Round 129 (Div. 2) Div. 2 900-1400 2/2 2m 24s
207 Abbyy Cup 2.0 - Final (unofficial) Special 1600-2700 14/17 25m 3s
208 Codeforces Round 130 (Div. 2) Div. 2 900-2100 4/4 4m 49s
209 VK Cup 2012 Finals, Practice Session Special 1600-2400 3/3 11m 47s
212 VK Cup 2012 Finals (unofficial online-version) Special 1500-3000 1/5 9m 48s
213 Codeforces Round 131 (Div. 1) Div. 1 1700-2700 3/5 7m 23s
214 Codeforces Round 131 (Div. 2) Div. 2 800-1600 2/2 3m 45s
215 Codeforces Round 132 (Div. 2) Div. 2 900-2100 4/5 8m 51s
216 Codeforces Round 133 (Div. 2) Div. 2 1200-2000 3/5 7m 31s
217 Codeforces Round 134 (Div. 1) Div. 1 1200-2900 3/4 12m 51s
218 Codeforces Round 134 (Div. 2) Div. 2 1100-1100 0/2 4m 13s
219 Codeforces Round 135 (Div. 2) Div. 2 1000-1600 3/3 5m 50s
220 Codeforces Round 136 (Div. 1) Div. 1 1300-2500 3/4 8m 14s
221 Codeforces Round 136 (Div. 2) Div. 2 1000-1300 2/2 3m 57s
222 Codeforces Round 137 (Div. 2) Div. 2 1200-1900 3/4 6m 42s
223 Codeforces Round 138 (Div. 1) Div. 1 1700-3000 3/4 8m 30s
224 Codeforces Round 138 (Div. 2) Div. 2 1100-1500 2/2 2m 3s
225 Codeforces Round 139 (Div. 2) Div. 2 1600-2200 3/4 9m 47s
226 Codeforces Round 140 (Div. 1) Div. 1 1400-2900 4/5 14m 33s
227 Codeforces Round 140 (Div. 2) Div. 2 1100-1300 2/2 6m 2s
228 Codeforces Round 141 (Div. 2) Div. 2 800-2100 2/4 7m 21s
229 Codeforces Round 142 (Div. 1) Div. 1 1500-2600 5/5 10m 59s
230 Codeforces Round 142 (Div. 2) Div. 2 1000-1300 2/2 4m 23s
231 Codeforces Round 143 (Div. 2) Div. 2 800-1600 3/3 5m 32s
232 Codeforces Round 144 (Div. 1) Div. 1 1600-2900 2/4 17m 15s
233 Codeforces Round 144 (Div. 2) Div. 2 800-1400 1/2 2m 15s
234 Codeforces Round 145 (Div. 2, ACM-ICPC Rules) Div. 2 1000-2000 2/5 9m 42s
235 Codeforces Round 146 (Div. 1) Div. 1 1600-3000 3/4 11m 16s
236 Codeforces Round 146 (Div. 2) Div. 2 800-1300 2/2 5m 12s
237 Codeforces Round 147 (Div. 2) Div. 2 1000-2000 3/3 9m 35s
238 Codeforces Round 148 (Div. 1) Div. 1 1300-2900 4/5 16m 8s
239 Codeforces Round 148 (Div. 2) Div. 2 1200-1500 1/2 4m 55s
240 Codeforces Round 145 (Div. 1, ACM-ICPC Rules) Div. 1 2600-2800 2/2 3m 3s
241 Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) ICPC/IOI 1900-2900 3/4 7m 47s
242 Codeforces Round 149 (Div. 2) Div. 2 1100-2100 3/5 12m 58s
243 Codeforces Round 150 (Div. 1) Div. 1 1600-3000 2/5 11m 4s
244 Codeforces Round 150 (Div. 2) Div. 2 900-1600 1/2 4m 21s
245 CROC-MBTU 2012, Elimination Round (ACM-ICPC) ICPC/IOI 800-2200 8/8 18m 42s
246 Codeforces Round 151 (Div. 2) Div. 2 900-1600 3/3 4m 21s
248 Codeforces Round 152 (Div. 2) Div. 2 800-2600 3/5 11m 52s
249 Codeforces Round 152 (Div. 1) Div. 1 2600-2700 0/2 5m 24s
250 CROC-MBTU 2012, Final Round (Online version, Div. 2) Div. 2 1000-2000 2/5 11m 54s
251 Codeforces Round 153 (Div. 1) Div. 1 1300-3000 2/5 26m 57s
252 Codeforces Round 153 (Div. 2) Div. 2 1100-1800 1/2 3m 28s
253 Codeforces Round 154 (Div. 2) Div. 2 1100-2200 5/5 7m 19s
254 Codeforces Round 155 (Div. 2) Div. 2 1200-2300 2/5 37m 47s
255 Codeforces Round 156 (Div. 2) Div. 2 800-2200 5/5 10m 7s
256 Codeforces Round 156 (Div. 1) Div. 1 2400-2700 1/2 5m
257 Codeforces Round 159 (Div. 2) Div. 2 1100-1900 4/4 6m 19s
258 Codeforces Round 157 (Div. 1) Div. 1 2000-2600 1/2 6m 43s
259 Codeforces Round 157 (Div. 2) Div. 2 1000-1000 1/1 1m 8s
260 Codeforces Round 158 (Div. 2) Div. 2 1400-2100 0/3 5m 48s
261 Codeforces Round 160 (Div. 1) Div. 1 1400-2800 3/3 6m 1s
262 Codeforces Round 160 (Div. 2) Div. 2 800-800 0/1 3m 6s
263 Codeforces Round 161 (Div. 2) Div. 2 800-2000 1/3 5m 38s
264 Codeforces Round 162 (Div. 1) Div. 1 1200-1200 1/1 1m 5s
265 Codeforces Round 162 (Div. 2) Div. 2 800-1000 1/2 2m 41s
266 Codeforces Round 163 (Div. 2) Div. 2 800-2500 2/4 8m 10s
267 Codeforces Testing Round 5 Special 900-2000 2/2 4m 20s
268 Codeforces Round 164 (Div. 2) Div. 2 800-2300 3/4 7m 8s
269 Codeforces Round 165 (Div. 1) Div. 1 1700-3100 2/4 7m 2s
270 Codeforces Round 165 (Div. 2) Div. 2 1100-1400 2/2 3m 31s
271 Codeforces Round 166 (Div. 2) Div. 2 1300-2200 3/4 7m 9s
272 Codeforces Round 167 (Div. 2) Div. 2 1400-2200 2/3 5m 30s
273 Codeforces Round 167 (Div. 1) Div. 1 2400-2400 0/1 2m 13s
274 Codeforces Round 168 (Div. 1) Div. 1 1500-1800 2/2 4m 42s
276 Codeforces Round 169 (Div. 2) Div. 2 900-1700 2/3 4m 36s
277 Codeforces Round 170 (Div. 1) Div. 1 1400-2800 1/3 6m 6s
279 Codeforces Round 171 (Div. 2) Div. 2 1400-1400 1/1 1m 28s
280 Codeforces Round 172 (Div. 1) Div. 1 1800-3000 1/2 3m 38s
281 Codeforces Round 172 (Div. 2) Div. 2 800-800 1/1 1m 15s
282 Codeforces Round 173 (Div. 2) Div. 2 1500-2100 2/2 2m 26s
283 Codeforces Round 174 (Div. 1) Div. 1 1600-2400 2/3 5m 38s
285 Codeforces Round 175 (Div. 2) Div. 2 1200-2600 2/2 1m 58s
286 Codeforces Round 176 (Div. 1) Div. 1 2200-2800 2/2 2m 31s
288 Codeforces Round 177 (Div. 1) Div. 1 1700-2400 1/2 3m 45s
289 Codeforces Round 177 (Div. 2) Div. 2 1400-1400 1/1 1m 16s
290 April Fools Day Contest 2013 April Fools 1400-2800 3/4 6m 44s
291 Croc Champ 2013 - Qualification Round Special 1300-2000 2/2 3m 17s
292 Croc Champ 2013 - Round 1 Special 1100-2000 4/4 6m 34s
293 Croc Champ 2013 - Round 2 Special 1500-2700 4/4 8m 33s
294 Codeforces Round 178 (Div. 2) Div. 2 800-2500 3/4 6m 7s
295 Codeforces Round 179 (Div. 1) Div. 1 1700-2500 4/4 11m 55s
296 Codeforces Round 179 (Div. 2) Div. 2 1100-1100 1/1 57s
297 Codeforces Round 180 (Div. 1) Div. 1 1600-3000 2/3 4m 3s
300 Codeforces Round 181 (Div. 2) Div. 2 1500-2300 2/3 5m 24s
301 Codeforces Round 182 (Div. 1) Div. 1 1800-2800 5/5 17m 11s
302 Codeforces Round 182 (Div. 2) Div. 2 800-1200 2/2 4m 57s
303 Codeforces Round 183 (Div. 1) Div. 1 1300-3000 3/5 15m 59s
304 Codeforces Round 183 (Div. 2) Div. 2 1200-1300 2/2 5m 19s
305 Codeforces Round 184 (Div. 2) Div. 2 1600-2300 5/5 7m 58s
306 Testing Round 6 Special 800-2300 1/4 10m 15s
309 Croc Champ 2013 - Finals (online version, Div. 1) Div. 1 1900-2900 4/4 12m 12s
311 Codeforces Round 185 (Div. 1) Div. 1 1300-2500 3/4 7m 26s
312 Codeforces Round 185 (Div. 2) Div. 2 1100-1100 0/1 3m 13s
313 Codeforces Round 186 (Div. 2) Div. 2 900-2300 1/3 5m 39s
314 Codeforces Round 187 (Div. 1) Div. 1 2000-2900 2/3 6m 22s
315 Codeforces Round 187 (Div. 2) Div. 2 1400-1400 1/1 1m 25s
316 ABBYY Cup 3.0 Special 1100-2400 6/12 30m 35s
317 Codeforces Round 188 (Div. 1) Div. 1 2300-3100 3/3 5m 58s
319 Codeforces Round 189 (Div. 1) Div. 1 2100-3000 1/2 4m 42s
320 Codeforces Round 189 (Div. 2) Div. 2 1500-1500 0/1 3m 52s
321 Codeforces Round 190 (Div. 1) Div. 1 2100-2600 2/2 5m 17s
322 Codeforces Round 190 (Div. 2) Div. 2 1000-1000 1/1 1m 48s
323 Testing Round 7 Special 1600-1600 1/1 3m 39s
325 MemSQL start[c]up Round 1 Special 1500-2800 2/2 6m 17s
327 Codeforces Round 191 (Div. 2) Div. 2 1200-2300 2/3 7m 2s
328 Testing Round 8 Special 1500-1800 0/2 3m 11s
329 Codeforces Round 192 (Div. 1) Div. 1 1500-3100 1/3 7m 40s
330 Codeforces Round 192 (Div. 2) Div. 2 1300-1300 0/1 1m 46s
331 ABBYY Cup 3.0 - Finals (online version) Special 1100-2900 3/7 27m 55s
332 Codeforces Round 193 (Div. 2) Div. 2 2200-2400 0/2 9m
333 Codeforces Round 194 (Div. 1) Div. 1 1600-2100 1/2 3m 54s
335 MemSQL start[c]up Round 2 - online version Special 1900-2800 1/3 8m 55s
336 Codeforces Round 195 (Div. 2) Div. 2 2100-2700 2/2 6m 33s
338 Codeforces Round 196 (Div. 1) Div. 1 2900-2900 1/1 1m 33s
339 Codeforces Round 197 (Div. 2) Div. 2 800-800 1/1 4m 3s
340 Codeforces Round 198 (Div. 2) Div. 2 1600-1600 1/1 4m 39s
341 Codeforces Round 198 (Div. 1) Div. 1 2500-2500 0/1 6m 10s
342 Codeforces Round 199 (Div. 2) Div. 2 1200-2400 2/3 16m 31s
343 Codeforces Round 200 (Div. 1) Div. 1 1900-1900 0/1 16m 21s
345 Friday the 13th, Programmers Day Special 1500-2700 2/3 5m 36s
346 Codeforces Round 201 (Div. 1) Div. 1 1600-1600 1/1 3m 49s
347 Codeforces Round 201 (Div. 2) Div. 2 1100-1100 1/1 1m 42s
348 Codeforces Round 202 (Div. 1) Div. 1 1600-2800 1/3 8m 10s
349 Codeforces Round 202 (Div. 2) Div. 2 1700-1700 1/1 2m 3s
350 Codeforces Round 203 (Div. 2) Div. 2 1200-2200 1/4 17m 31s
351 Codeforces Round 204 (Div. 1) Div. 1 1800-2700 1/2 4m 1s
352 Codeforces Round 204 (Div. 2) Div. 2 1000-1300 2/2 3m 51s
353 Codeforces Round 205 (Div. 2) Div. 2 1200-1600 2/2 5m 32s
354 Codeforces Round 206 (Div. 1) Div. 1 1500-2900 2/5 15m 26s
401 Codeforces Round 235 (Div. 2) Div. 2 800-2000 2/3 6m 53s
402 Codeforces Round 236 (Div. 2) Div. 2 1100-2200 1/4 11m 10s
403 Codeforces Round 236 (Div. 1) Div. 1 2300-2900 0/2 1m 57s
404 Codeforces Round 237 (Div. 2) Div. 2 1000-1900 0/4 12m 42s
405 Codeforces Round 238 (Div. 2) Div. 2 900-2300 0/4 15m 46s
406 Codeforces Round 238 (Div. 1) Div. 1 2200-2800 0/2 6m 36s
407 Codeforces Round 239 (Div. 1) Div. 1 1600-3100 0/4 10m 34s
409 April Fools Day Contest 2014 April Fools 1500-2200 0/6 15m 44s
411 Coder-Strike 2014 - Qualification Round Special 1700-1700 0/1 11m 4s
412 Coder-Strike 2014 - Round 1 Special 900-2000 1/4 8m 35s
413 Coder-Strike 2014 - Round 2 Special 1200-2200 4/5 9m 37s
414 Codeforces Round 240 (Div. 1) Div. 1 1400-3200 2/5 8m 52s
415 Codeforces Round 240 (Div. 2) Div. 2 900-1500 2/2 2m 30s
416 Codeforces Round 241 (Div. 2) Div. 2 1300-2500 4/5 8m 12s
417 RCC 2014 Warmup (Div. 2) Div. 2 1400-2400 4/5 7m 19s
418 RCC 2014 Warmup (Div. 1) Div. 1 2800-3100 1/2 3m 33s
420 Coder-Strike 2014 - Finals (online edition, Div. 1) Div. 1 1000-2600 4/5 8m 34s
421 Coder-Strike 2014 - Finals (online edition, Div. 2) Div. 2 800-1900 2/2 2m 37s
424 Codeforces Round 242 (Div. 2) Div. 2 900-2500 0/5 20m 42s
425 Codeforces Round 243 (Div. 1) Div. 1 2300-2500 1/3 10m 7s
426 Codeforces Round 243 (Div. 2) Div. 2 800-1300 2/2 2m 57s
427 Codeforces Round 244 (Div. 2) Div. 2 800-2200 5/5 7m 50s
429 Codeforces Round 245 (Div. 1) Div. 1 1300-3000 5/5 6m 47s
430 Codeforces Round 245 (Div. 2) Div. 2 1400-1600 1/2 3m 20s
431 Codeforces Round 247 (Div. 2) Div. 2 800-2200 5/5 8m 37s
432 Codeforces Round 246 (Div. 2) Div. 2 800-2300 2/2 4m 1s
433 Codeforces Round 248 (Div. 2) Div. 2 1100-1100 0/1 1m 42s
435 Codeforces Round 249 (Div. 2) Div. 2 1000-1000 1/1 1m 7s
436 Zepto Code Rush 2014 Special 1400-3000 0/3 9m 32s
437 Codeforces Round 250 (Div. 2) Div. 2 2500-2500 1/1 1m 18s
439 Codeforces Round 251 (Div. 2) Div. 2 900-1700 2/2 2m 9s
440 Testing Round 10 Special 1600-1600 1/1 1m 3s
441 Codeforces Round 252 (Div. 2) Div. 2 1000-2400 1/3 4m 27s
442 Codeforces Round 253 (Div. 1) Div. 1 1800-3100 1/2 3m 6s
443 Codeforces Round 253 (Div. 2) Div. 2 800-800 1/1 1m 19s
444 Codeforces Round 254 (Div. 1) Div. 1 1600-2700 2/3 4m 8s
445 Codeforces Round 254 (Div. 2) Div. 2 1200-1200 1/1 1m 21s
446 Codeforces Round #FF (Div. 1) Div. 1 2400-3100 0/3 9m 38s
447 Codeforces Round #FF (Div. 2) Div. 2 1000-1000 1/1 1m 11s
448 Codeforces Round 256 (Div. 2) Div. 2 800-2200 2/3 3m 43s
449 Codeforces Round 257 (Div. 1) Div. 1 1700-2900 3/5 9m 38s
450 Codeforces Round 257 (Div. 2) Div. 2 1000-1300 2/2 2m 25s
451 Codeforces Round 258 (Div. 2) Div. 2 900-2300 5/5 8m 33s
452 MemSQL Start[c]UP 2.0 - Round 1 Special 1000-2700 4/5 9m 36s
453 Codeforces Round 259 (Div. 1) Div. 1 1600-3100 4/5 8m 34s
454 Codeforces Round 259 (Div. 2) Div. 2 800-1200 2/2 2m 34s
455 Codeforces Round 260 (Div. 1) Div. 1 1500-2900 5/5 7m 50s
456 Codeforces Round 260 (Div. 2) Div. 2 1100-1200 2/2 2m 34s
457 MemSQL Start[c]UP 2.0 - Round 2 Special 1700-3200 4/6 11m 5s
459 Codeforces Round 261 (Div. 2) Div. 2 1200-1900 4/5 8m 37s
460 Codeforces Round 262 (Div. 2) Div. 2 900-2700 4/5 6m 14s
461 Codeforces Round 263 (Div. 1) Div. 1 1200-3000 3/5 8m 20s
462 Codeforces Round 263 (Div. 2) Div. 2 1000-1300 2/2 2m 11s
463 Codeforces Round 264 (Div. 2) Div. 2 1100-2100 5/5 4m 50s
464 Codeforces Round 265 (Div. 1) Div. 1 2000-3000 0/3 15m 43s
465 Codeforces Round 265 (Div. 2) Div. 2 900-1000 0/2 10m 43s
466 Codeforces Round 266 (Div. 2) Div. 2 1200-2100 3/5 6m 29s
467 Codeforces Round 267 (Div. 2) Div. 2 800-2400 3/5 6m 31s
468 Codeforces Round 268 (Div. 1) Div. 1 1500-3100 3/5 8m 30s
469 Codeforces Round 268 (Div. 2) Div. 2 800-1300 2/2 2m 52s
470 Surprise Language Round 7 Special 1400-2300 8/8 10m 9s
471 Codeforces Round 269 (Div. 2) Div. 2 1100-2700 3/5 8m 43s
472 Codeforces Round 270 Special 800-2800 5/7 12m 18s
474 Codeforces Round 271 (Div. 2) Div. 2 900-2100 6/6 9m 19s
475 Bayan 2015 Contest Warm Up Special 1100-2900 4/6 11m 19s
476 Codeforces Round 272 (Div. 2) Div. 2 1000-2200 5/5 12m 19s
477 Codeforces Round 272 (Div. 1) Div. 1 2700-3100 0/2 3m 11s
478 Codeforces Round 273 (Div. 2) Div. 2 1100-2900 4/5 6m
479 Codeforces Round 274 (Div. 2) Div. 2 1000-1900 3/5 19m 33s
480 Codeforces Round 274 (Div. 1) Div. 1 2600-2800 1/2 7m 16s
482 Codeforces Round 275 (Div. 1) Div. 1 1200-3200 0/4 23m 24s
483 Codeforces Round 275 (Div. 2) Div. 2 1100-1800 0/2 16m 14s
484 Codeforces Round 276 (Div. 1) Div. 1 1700-2500 0/4 26m 55s
485 Codeforces Round 276 (Div. 2) Div. 2 1300-1400 0/2 16m 31s
486 Codeforces Round 277 (Div. 2) Div. 2 800-2200 0/4 26m 47s
487 Codeforces Round 278 (Div. 1) Div. 1 1800-3200 0/4 27m 2s
488 Codeforces Round 278 (Div. 2) Div. 2 1100-1900 0/2 21m 45s
489 Codeforces Round 277.5 (Div. 2) Div. 2 1200-2300 0/4 38m 30s
490 Codeforces Round 279 (Div. 2) Div. 2 1500-2200 0/5 44m 5s
491 Testing Round 11 Special 1000-2300 1/3 17m 39s
492 Codeforces Round 280 (Div. 2) Div. 2 1400-2000 1/3 17m 42s
493 Codeforces Round 281 (Div. 2) Div. 2 1300-2800 3/5 16m 6s
494 Codeforces Round 282 (Div. 1) Div. 1 2000-3200 1/4 24m 13s
495 Codeforces Round 282 (Div. 2) Div. 2 1100-1600 1/2 7m 5s
1941 Codeforces Round 933 (Div. 3) Div. 3 800-2000 6/7 12m 58s
1942 CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!) Div. 1+2 800-3500 4/9 16m 46s
1943 Codeforces Round 934 (Div. 1) Div. 1 1300-3500 1/8 10m 17s
1944 Codeforces Round 934 (Div. 2) Div. 2 800-1100 1/2 2m 14s
1945 Codeforces Round 935 (Div. 3) Div. 3 800-2600 5/8 9m 25s
1946 Codeforces Round 936 (Div. 2) Div. 2 800-2500 1/5 10m 41s
1948 Educational Codeforces Round 163 (Rated for Div. 2) Div. 2 800-3100 2/6 11m 57s
1949 European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) ICPC/IOI 1500-3300 5/11 28m 1s
1950 Codeforces Round 937 (Div. 4) Div. 4 800-1900 6/7 7m 41s
1951 Codeforces Global Round 25 Global 900-3200 1/9 11m 49s
1952 April Fools Day Contest 2024 April Fools - 5/8 7m 9s
1953 2023 Post World Finals Online ICPC Challenge powered by Huawei ICPC/IOI - 1/1 52s
1954 Educational Codeforces Round 164 (Rated for Div. 2) Div. 2 900-3100 2/6 7m 33s
1955 Codeforces Round 938 (Div. 3) Div. 3 800-2300 5/8 7m 51s
1956 Codeforces Round 939 (Div. 2) Div. 2 800-3000 3/7 7m 40s
1957 Codeforces Round 940 (Div. 2) and CodeCraft-23 Div. 2 800-1100 1/2 4m 40s
1958 Kotlin Heroes: Episode 10 Kotlin 1100-3200 7/10 11m 13s
1965 Codeforces Round 941 (Div. 1) Div. 1 1400-3300 0/6 7m 12s
1966 Codeforces Round 941 (Div. 2) Div. 2 800-1100 0/2 2m 20s
1967 Codeforces Round 942 (Div. 1) Div. 1 1400-3500 1/8 10m 27s
1968 Codeforces Round 943 (Div. 3) Div. 3 800-800 1/2 2m 13s
1972 Codeforces Round 942 (Div. 2) Div. 2 900-900 0/1 5m 40s
1973 Codeforces Round 945 (Div. 2) Div. 2 900-3100 0/6 31m 30s
1974 Codeforces Round 946 (Div. 3) Div. 3 800-2000 0/7 36m 53s
1975 Codeforces Round 947 (Div. 1 + Div. 2) Div. 1+2 800-3500 0/9 47m 41s
1976 Educational Codeforces Round 166 (Rated for Div. 2) Div. 2 800-2800 0/6 31m 36s
2218 Codeforces Round 1090 (Div. 4) Div. 4 800-1800 1/4 10m 7s
2219 Codeforces Round 1093 (Div. 1) Div. 1 - 0/1 3m 30s
2222 Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2) Div. 1+2 - 0/6 23m 39s
2225 Educational Codeforces Round 189 (Rated for Div. 2) Div. 2 - 0/5 14m 18s
2226 Codeforces Round 1095 (Div. 2) Div. 2 - 0/7 23m 23s
2227 Codeforces Round 1096 (Div. 3) Div. 3 - 0/8 27m 59s
Practice › Codeforces Solutions ›

Codeforces Beta Round 1

Solutions for Codeforces Beta Round 1 (contest 1). 3/3 problems verified against sample I/O. Difficulty range: 1000-2100.
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Codeforces Beta Round 2

Solutions for Codeforces Beta Round 2 (contest 2). 2/3 problems verified against sample I/O. Difficulty range: 1500-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 3

Solutions for Codeforces Beta Round 3 (contest 3). 4/4 problems verified against sample I/O. Difficulty range: 1000-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 4 (Div. 2 Only)

Solutions for Codeforces Beta Round 4 (Div. 2 Only) (contest 4). 4/4 problems verified against sample I/O. Difficulty range: 800-1700.
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Codeforces Beta Round 5

Solutions for Codeforces Beta Round 5 (contest 5). 5/5 problems verified against sample I/O. Difficulty range: 1000-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 6 (Div. 2 Only)

Solutions for Codeforces Beta Round 6 (Div. 2 Only) (contest 6). 5/5 problems verified against sample I/O. Difficulty range: 900-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 7

Solutions for Codeforces Beta Round 7 (contest 7). 5/5 problems verified against sample I/O. Difficulty range: 1100-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 8

Solutions for Codeforces Beta Round 8 (contest 8). 5/5 problems verified against sample I/O. Difficulty range: 1200-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 9 (Div. 2 Only)

Solutions for Codeforces Beta Round 9 (Div. 2 Only) (contest 9). 5/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 10

Solutions for Codeforces Beta Round 10 (contest 10). 4/5 problems verified against sample I/O. Difficulty range: 900-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 11

Solutions for Codeforces Beta Round 11 (contest 11). 5/5 problems verified against sample I/O. Difficulty range: 900-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 12 (Div 2 Only)

Solutions for Codeforces Beta Round 12 (Div 2 Only) (contest 12). 5/5 problems verified against sample I/O. Difficulty range: 800-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 13

Solutions for Codeforces Beta Round 13 (contest 13). 5/5 problems verified against sample I/O. Difficulty range: 1000-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 14 (Div. 2)

Solutions for Codeforces Beta Round 14 (Div. 2) (contest 14). 5/5 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 15

Solutions for Codeforces Beta Round 15 (contest 15). 5/5 problems verified against sample I/O. Difficulty range: 1200-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 16 (Div. 2 Only)

Solutions for Codeforces Beta Round 16 (Div. 2 Only) (contest 16). 5/5 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 17

Solutions for Codeforces Beta Round 17 (contest 17). 4/5 problems verified against sample I/O. Difficulty range: 1000-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 18 (Div. 2 Only)

Solutions for Codeforces Beta Round 18 (Div. 2 Only) (contest 18). 5/5 problems verified against sample I/O. Difficulty range: 1200-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 19

Solutions for Codeforces Beta Round 19 (contest 19). 5/5 problems verified against sample I/O. Difficulty range: 1400-2900.
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Practice › Codeforces Solutions ›

Codeforces Alpha Round 20 (Codeforces format)

Solutions for Codeforces Alpha Round 20 (Codeforces format) (contest 20). 3/3 problems verified against sample I/O. Difficulty range: 1700-2000.
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Practice › Codeforces Solutions ›

Codeforces Alpha Round 21 (Codeforces format)

Solutions for Codeforces Alpha Round 21 (Codeforces format) (contest 21). 3/4 problems verified against sample I/O. Difficulty range: 1900-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 22 (Div. 2 Only)

Solutions for Codeforces Beta Round 22 (Div. 2 Only) (contest 22). 4/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 23

Solutions for Codeforces Beta Round 23 (contest 23). 4/5 problems verified against sample I/O. Difficulty range: 1200-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 24

Solutions for Codeforces Beta Round 24 (contest 24). 5/5 problems verified against sample I/O. Difficulty range: 1400-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 25 (Div. 2 Only)

Solutions for Codeforces Beta Round 25 (Div. 2 Only) (contest 25). 5/5 problems verified against sample I/O. Difficulty range: 1100-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 26 (Codeforces format)

Solutions for Codeforces Beta Round 26 (Codeforces format) (contest 26). 4/5 problems verified against sample I/O. Difficulty range: 900-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 27 (Codeforces format, Div. 2)

Solutions for Codeforces Beta Round 27 (Codeforces format, Div. 2) (contest 27). 4/5 problems verified against sample I/O. Difficulty range: 1200-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 28 (Codeforces format)

Solutions for Codeforces Beta Round 28 (Codeforces format) (contest 28). 4/5 problems verified against sample I/O. Difficulty range: 1600-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 29 (Div. 2, Codeforces format)

Solutions for Codeforces Beta Round 29 (Div. 2, Codeforces format) (contest 29). 3/5 problems verified against sample I/O. Difficulty range: 1000-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 30 (Codeforces format)

Solutions for Codeforces Beta Round 30 (Codeforces format) (contest 30). 4/5 problems verified against sample I/O. Difficulty range: 1400-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 31 (Div. 2, Codeforces format)

Solutions for Codeforces Beta Round 31 (Div. 2, Codeforces format) (contest 31). 4/5 problems verified against sample I/O. Difficulty range: 1200-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 32 (Div. 2, Codeforces format)

Solutions for Codeforces Beta Round 32 (Div. 2, Codeforces format) (contest 32). 5/5 problems verified against sample I/O. Difficulty range: 800-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 33 (Codeforces format)

Solutions for Codeforces Beta Round 33 (Codeforces format) (contest 33). 4/5 problems verified against sample I/O. Difficulty range: 1200-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 34 (Div. 2)

Solutions for Codeforces Beta Round 34 (Div. 2) (contest 34). 5/5 problems verified against sample I/O. Difficulty range: 800-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 35 (Div. 2)

Solutions for Codeforces Beta Round 35 (Div. 2) (contest 35). 5/5 problems verified against sample I/O. Difficulty range: 1000-2100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 36

Solutions for Codeforces Beta Round 36 (contest 36). 2/5 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 37

Solutions for Codeforces Beta Round 37 (contest 37). 4/5 problems verified against sample I/O. Difficulty range: 1000-2600.
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Practice › Codeforces Solutions ›

School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules)

Solutions for School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules) (contest 38). 5/8 problems verified against sample I/O. Difficulty range: 800-2400.
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Practice › Codeforces Solutions ›

School Team Contest 1 (Winter Computer School 2010/11)

Solutions for School Team Contest 1 (Winter Computer School 2010/11) (contest 39). 9/11 problems verified against sample I/O. Difficulty range: 1100-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 39

Solutions for Codeforces Beta Round 39 (contest 40). 5/5 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 40 (Div. 2)

Solutions for Codeforces Beta Round 40 (Div. 2) (contest 41). 3/5 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 41

Solutions for Codeforces Beta Round 41 (contest 42). 4/5 problems verified against sample I/O. Difficulty range: 1400-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 42 (Div. 2)

Solutions for Codeforces Beta Round 42 (Div. 2) (contest 43). 5/5 problems verified against sample I/O. Difficulty range: 1000-2300.
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Practice › Codeforces Solutions ›

School Team Contest 2 (Winter Computer School 2010/11)

Solutions for School Team Contest 2 (Winter Computer School 2010/11) (contest 44). 6/10 problems verified against sample I/O. Difficulty range: 900-2700.
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Practice › Codeforces Solutions ›

School Team Contest 3 (Winter Computer School 2010/11)

Solutions for School Team Contest 3 (Winter Computer School 2010/11) (contest 45). 7/10 problems verified against sample I/O. Difficulty range: 900-2500.
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Practice › Codeforces Solutions ›

School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round 43 (ACM-ICPC Rules)

Solutions for School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round 43 (ACM-ICPC Rules) (contest 46). 6/7 problems verified against sample I/O. Difficulty range: 800-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 44 (Div. 2)

Solutions for Codeforces Beta Round 44 (Div. 2) (contest 47). 3/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules)

Solutions for School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules) (contest 48). 6/8 problems verified against sample I/O. Difficulty range: 900-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 46 (Div. 2)

Solutions for Codeforces Beta Round 46 (Div. 2) (contest 49). 5/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 47

Solutions for Codeforces Beta Round 47 (contest 50). 4/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 48

Solutions for Codeforces Beta Round 48 (contest 51). 4/6 problems verified against sample I/O. Difficulty range: 1300-2800.
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Practice › Codeforces Solutions ›

Codeforces Testing Round 1

Solutions for Codeforces Testing Round 1 (contest 52). 3/3 problems verified against sample I/O. Difficulty range: 900-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 49 (Div. 2)

Solutions for Codeforces Beta Round 49 (Div. 2) (contest 53). 4/5 problems verified against sample I/O. Difficulty range: 1100-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 50

Solutions for Codeforces Beta Round 50 (contest 54). 5/5 problems verified against sample I/O. Difficulty range: 1300-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 51

Solutions for Codeforces Beta Round 51 (contest 55). 3/5 problems verified against sample I/O. Difficulty range: 1200-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 52 (Div. 2)

Solutions for Codeforces Beta Round 52 (Div. 2) (contest 56). 5/5 problems verified against sample I/O. Difficulty range: 1000-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 53

Solutions for Codeforces Beta Round 53 (contest 57). 5/5 problems verified against sample I/O. Difficulty range: 1300-3000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 54 (Div. 2)

Solutions for Codeforces Beta Round 54 (Div. 2) (contest 58). 3/5 problems verified against sample I/O. Difficulty range: 1000-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 55 (Div. 2)

Solutions for Codeforces Beta Round 55 (Div. 2) (contest 59). 3/5 problems verified against sample I/O. Difficulty range: 800-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 56

Solutions for Codeforces Beta Round 56 (contest 60). 4/5 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 57 (Div. 2)

Solutions for Codeforces Beta Round 57 (Div. 2) (contest 61). 5/5 problems verified against sample I/O. Difficulty range: 800-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 58

Solutions for Codeforces Beta Round 58 (contest 62). 4/5 problems verified against sample I/O. Difficulty range: 1300-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 59 (Div. 2)

Solutions for Codeforces Beta Round 59 (Div. 2) (contest 63). 4/5 problems verified against sample I/O. Difficulty range: 900-2000.
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Practice › Codeforces Solutions ›

Unknown Language Round 1

Solutions for Unknown Language Round 1 (contest 64). 9/9 problems verified against sample I/O. Difficulty range: 1300-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 60

Solutions for Codeforces Beta Round 60 (contest 65). 3/5 problems verified against sample I/O. Difficulty range: 1700-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 61 (Div. 2)

Solutions for Codeforces Beta Round 61 (Div. 2) (contest 66). 3/5 problems verified against sample I/O. Difficulty range: 1100-2000.
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Practice › Codeforces Solutions ›

Manthan 2011

Solutions for Manthan 2011 (contest 67). 5/5 problems verified against sample I/O. Difficulty range: 1800-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 62

Solutions for Codeforces Beta Round 62 (contest 68). 5/5 problems verified against sample I/O. Difficulty range: 1100-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 63 (Div. 2)

Solutions for Codeforces Beta Round 63 (Div. 2) (contest 69). 5/5 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 64

Solutions for Codeforces Beta Round 64 (contest 70). 4/5 problems verified against sample I/O. Difficulty range: 1300-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 65 (Div. 2)

Solutions for Codeforces Beta Round 65 (Div. 2) (contest 71). 4/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Unknown Language Round 2

Solutions for Unknown Language Round 2 (contest 72). 8/9 problems verified against sample I/O. Difficulty range: 1000-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 66

Solutions for Codeforces Beta Round 66 (contest 73). 6/6 problems verified against sample I/O. Difficulty range: 1600-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 68

Solutions for Codeforces Beta Round 68 (contest 74). 4/5 problems verified against sample I/O. Difficulty range: 1000-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 67 (Div. 2)

Solutions for Codeforces Beta Round 67 (Div. 2) (contest 75). 4/5 problems verified against sample I/O. Difficulty range: 1000-2400.
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Practice › Codeforces Solutions ›

All-Ukrainian School Olympiad in Informatics

Solutions for All-Ukrainian School Olympiad in Informatics (contest 76). 5/6 problems verified against sample I/O. Difficulty range: 1700-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 69 (Div. 1 Only)

Solutions for Codeforces Beta Round 69 (Div. 1 Only) (contest 77). 2/5 problems verified against sample I/O. Difficulty range: 1400-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 70 (Div. 2)

Solutions for Codeforces Beta Round 70 (Div. 2) (contest 78). 4/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 71

Solutions for Codeforces Beta Round 71 (contest 79). 5/5 problems verified against sample I/O. Difficulty range: 1200-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 69 (Div. 2 Only)

Solutions for Codeforces Beta Round 69 (Div. 2 Only) (contest 80). 2/2 problems verified against sample I/O. Difficulty range: 800-1200.
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Practice › Codeforces Solutions ›

Yandex.Algorithm Open 2011: Qualification 1

Solutions for Yandex.Algorithm Open 2011: Qualification 1 (contest 81). 3/5 problems verified against sample I/O. Difficulty range: 1400-2700.
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Practice › Codeforces Solutions ›

Yandex.Algorithm 2011: Qualification 2

Solutions for Yandex.Algorithm 2011: Qualification 2 (contest 82). 4/5 problems verified against sample I/O. Difficulty range: 1100-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 72 (Div. 1 Only)

Solutions for Codeforces Beta Round 72 (Div. 1 Only) (contest 83). 5/5 problems verified against sample I/O. Difficulty range: 1300-2800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 72 (Div. 2 Only)

Solutions for Codeforces Beta Round 72 (Div. 2 Only) (contest 84). 1/2 problems verified against sample I/O. Difficulty range: 900-1700.
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Practice › Codeforces Solutions ›

Yandex.Algorithm 2011: Round 1

Solutions for Yandex.Algorithm 2011: Round 1 (contest 85). 5/5 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

Yandex.Algorithm 2011: Round 2

Solutions for Yandex.Algorithm 2011: Round 2 (contest 86). 5/5 problems verified against sample I/O. Difficulty range: 1600-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 73 (Div. 1 Only)

Solutions for Codeforces Beta Round 73 (Div. 1 Only) (contest 87). 5/5 problems verified against sample I/O. Difficulty range: 1500-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 73 (Div. 2 Only)

Solutions for Codeforces Beta Round 73 (Div. 2 Only) (contest 88). 2/2 problems verified against sample I/O. Difficulty range: 1200-1500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 74 (Div. 1 Only)

Solutions for Codeforces Beta Round 74 (Div. 1 Only) (contest 89). 4/5 problems verified against sample I/O. Difficulty range: 1800-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 74 (Div. 2 Only)

Solutions for Codeforces Beta Round 74 (Div. 2 Only) (contest 90). 2/2 problems verified against sample I/O. Difficulty range: 1000-1100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 75 (Div. 1 Only)

Solutions for Codeforces Beta Round 75 (Div. 1 Only) (contest 91). 5/5 problems verified against sample I/O. Difficulty range: 1500-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 75 (Div. 2 Only)

Solutions for Codeforces Beta Round 75 (Div. 2 Only) (contest 92). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 76 (Div. 1 Only)

Solutions for Codeforces Beta Round 76 (Div. 1 Only) (contest 93). 3/5 problems verified against sample I/O. Difficulty range: 1700-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 76 (Div. 2 Only)

Solutions for Codeforces Beta Round 76 (Div. 2 Only) (contest 94). 2/2 problems verified against sample I/O. Difficulty range: 900-1300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 77 (Div. 1 Only)

Solutions for Codeforces Beta Round 77 (Div. 1 Only) (contest 95). 5/5 problems verified against sample I/O. Difficulty range: 1600-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 77 (Div. 2 Only)

Solutions for Codeforces Beta Round 77 (Div. 2 Only) (contest 96). 2/2 problems verified against sample I/O. Difficulty range: 900-1300.
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Practice › Codeforces Solutions ›

Yandex.Algorithm 2011: Finals

Solutions for Yandex.Algorithm 2011: Finals (contest 97). 4/5 problems verified against sample I/O. Difficulty range: 2200-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 78 (Div. 1 Only)

Solutions for Codeforces Beta Round 78 (Div. 1 Only) (contest 98). 5/5 problems verified against sample I/O. Difficulty range: 1700-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 78 (Div. 2 Only)

Solutions for Codeforces Beta Round 78 (Div. 2 Only) (contest 99). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Unknown Language Round 3

Solutions for Unknown Language Round 3 (contest 100). 10/10 problems verified against sample I/O. Difficulty range: 1100-2400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 79 (Div. 1 Only)

Solutions for Codeforces Beta Round 79 (Div. 1 Only) (contest 101). 4/5 problems verified against sample I/O. Difficulty range: 1200-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 79 (Div. 2 Only)

Solutions for Codeforces Beta Round 79 (Div. 2 Only) (contest 102). 2/2 problems verified against sample I/O. Difficulty range: 1000-1200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 80 (Div. 1 Only)

Solutions for Codeforces Beta Round 80 (Div. 1 Only) (contest 103). 3/5 problems verified against sample I/O. Difficulty range: 1100-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 80 (Div. 2 Only)

Solutions for Codeforces Beta Round 80 (Div. 2 Only) (contest 104). 1/1 problems verified against sample I/O. Difficulty range: 800-800.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 81

Solutions for Codeforces Beta Round 81 (contest 105). 4/5 problems verified against sample I/O. Difficulty range: 1700-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 82 (Div. 2)

Solutions for Codeforces Beta Round 82 (Div. 2) (contest 106). 4/5 problems verified against sample I/O. Difficulty range: 1000-2100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 83 (Div. 1 Only)

Solutions for Codeforces Beta Round 83 (Div. 1 Only) (contest 107). 5/5 problems verified against sample I/O. Difficulty range: 1400-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 83 (Div. 2 Only)

Solutions for Codeforces Beta Round 83 (Div. 2 Only) (contest 108). 2/2 problems verified against sample I/O. Difficulty range: 1000-1400.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 84 (Div. 1 Only)

Solutions for Codeforces Beta Round 84 (Div. 1 Only) (contest 109). 5/5 problems verified against sample I/O. Difficulty range: 1000-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 84 (Div. 2 Only)

Solutions for Codeforces Beta Round 84 (Div. 2 Only) (contest 110). 2/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 85 (Div. 1 Only)

Solutions for Codeforces Beta Round 85 (Div. 1 Only) (contest 111). 3/5 problems verified against sample I/O. Difficulty range: 1400-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 85 (Div. 2 Only)

Solutions for Codeforces Beta Round 85 (Div. 2 Only) (contest 112). 2/2 problems verified against sample I/O. Difficulty range: 800-1200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 86 (Div. 1 Only)

Solutions for Codeforces Beta Round 86 (Div. 1 Only) (contest 113). 5/5 problems verified against sample I/O. Difficulty range: 1600-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 86 (Div. 2 Only)

Solutions for Codeforces Beta Round 86 (Div. 2 Only) (contest 114). 2/2 problems verified against sample I/O. Difficulty range: 1000-1500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 87 (Div. 1 Only)

Solutions for Codeforces Beta Round 87 (Div. 1 Only) (contest 115). 3/5 problems verified against sample I/O. Difficulty range: 900-2600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 87 (Div. 2 Only)

Solutions for Codeforces Beta Round 87 (Div. 2 Only) (contest 116). 2/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 88

Solutions for Codeforces Beta Round 88 (contest 117). 5/5 problems verified against sample I/O. Difficulty range: 1300-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 89 (Div. 2)

Solutions for Codeforces Beta Round 89 (Div. 2) (contest 118). 4/5 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 90

Solutions for Codeforces Beta Round 90 (contest 119). 4/5 problems verified against sample I/O. Difficulty range: 800-2500.
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Practice › Codeforces Solutions ›

School Regional Team Contest, Saratov, 2011

Solutions for School Regional Team Contest, Saratov, 2011 (contest 120). 8/10 problems verified against sample I/O. Difficulty range: 1000-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 91 (Div. 1 Only)

Solutions for Codeforces Beta Round 91 (Div. 1 Only) (contest 121). 5/5 problems verified against sample I/O. Difficulty range: 1100-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 91 (Div. 2 Only)

Solutions for Codeforces Beta Round 91 (Div. 2 Only) (contest 122). 2/2 problems verified against sample I/O. Difficulty range: 1000-1000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 92 (Div. 1 Only)

Solutions for Codeforces Beta Round 92 (Div. 1 Only) (contest 123). 3/5 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 92 (Div. 2 Only)

Solutions for Codeforces Beta Round 92 (Div. 2 Only) (contest 124). 2/2 problems verified against sample I/O. Difficulty range: 1000-1400.
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Practice › Codeforces Solutions ›

Codeforces Testing Round 2

Solutions for Codeforces Testing Round 2 (contest 125). 2/3 problems verified against sample I/O. Difficulty range: 1000-1600.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 93 (Div. 1 Only)

Solutions for Codeforces Beta Round 93 (Div. 1 Only) (contest 126). 2/2 problems verified against sample I/O. Difficulty range: 1700-1900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 93 (Div. 2 Only)

Solutions for Codeforces Beta Round 93 (Div. 2 Only) (contest 127). 2/2 problems verified against sample I/O. Difficulty range: 900-1000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 94 (Div. 1 Only)

Solutions for Codeforces Beta Round 94 (Div. 1 Only) (contest 128). 5/5 problems verified against sample I/O. Difficulty range: 1500-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 94 (Div. 2 Only)

Solutions for Codeforces Beta Round 94 (Div. 2 Only) (contest 129). 2/2 problems verified against sample I/O. Difficulty range: 900-1200.
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Practice › Codeforces Solutions ›

Unknown Language Round 4

Solutions for Unknown Language Round 4 (contest 130). 10/10 problems verified against sample I/O. Difficulty range: 900-2300.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 95 (Div. 2)

Solutions for Codeforces Beta Round 95 (Div. 2) (contest 131). 5/6 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 96 (Div. 1)

Solutions for Codeforces Beta Round 96 (Div. 1) (contest 132). 3/5 problems verified against sample I/O. Difficulty range: 1300-2700.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 96 (Div. 2)

Solutions for Codeforces Beta Round 96 (Div. 2) (contest 133). 2/2 problems verified against sample I/O. Difficulty range: 900-1200.
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Practice › Codeforces Solutions ›

Codeforces Testing Round 3

Solutions for Codeforces Testing Round 3 (contest 134). 2/3 problems verified against sample I/O. Difficulty range: 1200-2200.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 97 (Div. 1)

Solutions for Codeforces Beta Round 97 (Div. 1) (contest 135). 5/5 problems verified against sample I/O. Difficulty range: 1300-3000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 97 (Div. 2)

Solutions for Codeforces Beta Round 97 (Div. 2) (contest 136). 2/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 98 (Div. 2)

Solutions for Codeforces Beta Round 98 (Div. 2) (contest 137). 5/5 problems verified against sample I/O. Difficulty range: 900-2000.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 99 (Div. 1)

Solutions for Codeforces Beta Round 99 (Div. 1) (contest 138). 4/5 problems verified against sample I/O. Difficulty range: 1600-2900.
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Practice › Codeforces Solutions ›

Codeforces Beta Round 99 (Div. 2)

Solutions for Codeforces Beta Round 99 (Div. 2) (contest 139). 2/2 problems verified against sample I/O. Difficulty range: 1000-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 100

Solutions for Codeforces Round 100 (contest 140). 3/6 problems verified against sample I/O. Difficulty range: 1700-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 101 (Div. 2)

Solutions for Codeforces Round 101 (Div. 2) (contest 141). 4/5 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 102 (Div. 1)

Solutions for Codeforces Round 102 (Div. 1) (contest 142). 5/5 problems verified against sample I/O. Difficulty range: 1600-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 102 (Div. 2)

Solutions for Codeforces Round 102 (Div. 2) (contest 143). 2/2 problems verified against sample I/O. Difficulty range: 1000-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 103 (Div. 2)

Solutions for Codeforces Round 103 (Div. 2) (contest 144). 5/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 104 (Div. 1)

Solutions for Codeforces Round 104 (Div. 1) (contest 145). 4/5 problems verified against sample I/O. Difficulty range: 1200-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 104 (Div. 2)

Solutions for Codeforces Round 104 (Div. 2) (contest 146). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Codeforces Testing Round 4

Solutions for Codeforces Testing Round 4 (contest 147). 2/2 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 105 (Div. 2)

Solutions for Codeforces Round 105 (Div. 2) (contest 148). 3/5 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 106 (Div. 2)

Solutions for Codeforces Round 106 (Div. 2) (contest 149). 4/5 problems verified against sample I/O. Difficulty range: 900-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 107 (Div. 1)

Solutions for Codeforces Round 107 (Div. 1) (contest 150). 4/5 problems verified against sample I/O. Difficulty range: 1400-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 107 (Div. 2)

Solutions for Codeforces Round 107 (Div. 2) (contest 151). 2/2 problems verified against sample I/O. Difficulty range: 800-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 108 (Div. 2)

Solutions for Codeforces Round 108 (Div. 2) (contest 152). 4/5 problems verified against sample I/O. Difficulty range: 900-2600.
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Practice › Codeforces Solutions ›

Surprise Language Round 5

Solutions for Surprise Language Round 5 (contest 153). 4/5 problems verified against sample I/O. Difficulty range: 1600-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 109 (Div. 1)

Solutions for Codeforces Round 109 (Div. 1) (contest 154). 4/4 problems verified against sample I/O. Difficulty range: 1600-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 109 (Div. 2)

Solutions for Codeforces Round 109 (Div. 2) (contest 155). 1/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 110 (Div. 2)

Solutions for Codeforces Round 110 (Div. 2) (contest 157). 2/2 problems verified against sample I/O. Difficulty range: 800-1000.
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Practice › Codeforces Solutions ›

VK Cup 2012 Qualification Round 1

Solutions for VK Cup 2012 Qualification Round 1 (contest 158). 5/5 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

VK Cup 2012 Qualification Round 2

Solutions for VK Cup 2012 Qualification Round 2 (contest 159). 5/5 problems verified against sample I/O. Difficulty range: 1100-1700.
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Practice › Codeforces Solutions ›

Codeforces Round 111 (Div. 2)

Solutions for Codeforces Round 111 (Div. 2) (contest 160). 5/5 problems verified against sample I/O. Difficulty range: 900-2400.
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Practice › Codeforces Solutions ›

VK Cup 2012 Round 1

Solutions for VK Cup 2012 Round 1 (contest 161). 5/5 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

VK Cup 2012 Wild-card Round 1

Solutions for VK Cup 2012 Wild-card Round 1 (contest 162). 9/10 problems verified against sample I/O. Difficulty range: 1100-2000.
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Practice › Codeforces Solutions ›

VK Cup 2012 Round 2

Solutions for VK Cup 2012 Round 2 (contest 163). 2/5 problems verified against sample I/O. Difficulty range: 1700-2900.
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Practice › Codeforces Solutions ›

VK Cup 2012 Round 3

Solutions for VK Cup 2012 Round 3 (contest 164). 3/5 problems verified against sample I/O. Difficulty range: 1700-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 112 (Div. 2)

Solutions for Codeforces Round 112 (Div. 2) (contest 165). 4/5 problems verified against sample I/O. Difficulty range: 1000-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 113 (Div. 2)

Solutions for Codeforces Round 113 (Div. 2) (contest 166). 5/5 problems verified against sample I/O. Difficulty range: 1100-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 114 (Div. 1)

Solutions for Codeforces Round 114 (Div. 1) (contest 167). 3/5 problems verified against sample I/O. Difficulty range: 1600-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 114 (Div. 2)

Solutions for Codeforces Round 114 (Div. 2) (contest 168). 1/1 problems verified against sample I/O. Difficulty range: 900-900.
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Practice › Codeforces Solutions ›

VK Cup 2012 Round 2 (Unofficial Div. 2 Edition)

Solutions for VK Cup 2012 Round 2 (Unofficial Div. 2 Edition) (contest 169). 2/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Practice › Codeforces Solutions ›

April Fools Day Contest

Solutions for April Fools Day Contest (contest 171). 8/8 problems verified against sample I/O. Difficulty range: 1200-2000.
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Practice › Codeforces Solutions ›

Croc Champ 2012 - Qualification Round

Solutions for Croc Champ 2012 - Qualification Round (contest 172). 4/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Croc Champ 2012 - Round 1

Solutions for Croc Champ 2012 - Round 1 (contest 173). 3/5 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)

Solutions for VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) (contest 174). 3/3 problems verified against sample I/O. Difficulty range: 1100-1800.
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Practice › Codeforces Solutions ›

Codeforces Round 115

Solutions for Codeforces Round 115 (contest 175). 5/5 problems verified against sample I/O. Difficulty range: 1400-3000.
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Practice › Codeforces Solutions ›

Croc Champ 2012 - Round 2

Solutions for Croc Champ 2012 - Round 2 (contest 176). 4/4 problems verified against sample I/O. Difficulty range: 1200-3100.
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Practice › Codeforces Solutions ›

ABBYY Cup 2.0 - Easy

Solutions for ABBYY Cup 2.0 - Easy (contest 177). 10/11 problems verified against sample I/O. Difficulty range: 800-2600.
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Practice › Codeforces Solutions ›

ABBYY Cup 2.0 - Hard

Solutions for ABBYY Cup 2.0 - Hard (contest 178). 10/12 problems verified against sample I/O. Difficulty range: 1000-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 116 (Div. 2, ACM-ICPC Rules)

Solutions for Codeforces Round 116 (Div. 2, ACM-ICPC Rules) (contest 180). 5/5 problems verified against sample I/O. Difficulty range: 1200-2300.
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Practice › Codeforces Solutions ›

Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)

Solutions for Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) (contest 181). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 117 (Div. 2)

Solutions for Codeforces Round 117 (Div. 2) (contest 182). 4/5 problems verified against sample I/O. Difficulty range: 1000-2200.
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Practice › Codeforces Solutions ›

Croc Champ 2012 - Final

Solutions for Croc Champ 2012 - Final (contest 183). 5/5 problems verified against sample I/O. Difficulty range: 1700-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 118 (Div. 1)

Solutions for Codeforces Round 118 (Div. 1) (contest 185). 3/4 problems verified against sample I/O. Difficulty range: 1300-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 118 (Div. 2)

Solutions for Codeforces Round 118 (Div. 2) (contest 186). 2/2 problems verified against sample I/O. Difficulty range: 1100-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 119 (Div. 1)

Solutions for Codeforces Round 119 (Div. 1) (contest 187). 4/5 problems verified against sample I/O. Difficulty range: 1500-2900.
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Practice › Codeforces Solutions ›

Surprise Language Round 6

Solutions for Surprise Language Round 6 (contest 188). 4/4 problems verified against sample I/O. Difficulty range: 1300-1400.
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Practice › Codeforces Solutions ›

Codeforces Round 119 (Div. 2)

Solutions for Codeforces Round 119 (Div. 2) (contest 189). 2/2 problems verified against sample I/O. Difficulty range: 1300-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 120 (Div. 2)

Solutions for Codeforces Round 120 (Div. 2) (contest 190). 4/4 problems verified against sample I/O. Difficulty range: 1100-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 121 (Div. 1)

Solutions for Codeforces Round 121 (Div. 1) (contest 191). 5/5 problems verified against sample I/O. Difficulty range: 1500-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 121 (Div. 2)

Solutions for Codeforces Round 121 (Div. 2) (contest 192). 0/2 problems verified against sample I/O. Difficulty range: 1100-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 122 (Div. 1)

Solutions for Codeforces Round 122 (Div. 1) (contest 193). 3/4 problems verified against sample I/O. Difficulty range: 1700-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 122 (Div. 2)

Solutions for Codeforces Round 122 (Div. 2) (contest 194). 2/2 problems verified against sample I/O. Difficulty range: 900-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 123 (Div. 2)

Solutions for Codeforces Round 123 (Div. 2) (contest 195). 3/4 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 124 (Div. 1)

Solutions for Codeforces Round 124 (Div. 1) (contest 196). 3/4 problems verified against sample I/O. Difficulty range: 1100-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 124 (Div. 2)

Solutions for Codeforces Round 124 (Div. 2) (contest 197). 2/2 problems verified against sample I/O. Difficulty range: 1400-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 125 (Div. 1)

Solutions for Codeforces Round 125 (Div. 1) (contest 198). 1/3 problems verified against sample I/O. Difficulty range: 1700-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 125 (Div. 2)

Solutions for Codeforces Round 125 (Div. 2) (contest 199). 1/2 problems verified against sample I/O. Difficulty range: 900-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 126 (Div. 2)

Solutions for Codeforces Round 126 (Div. 2) (contest 200). 3/3 problems verified against sample I/O. Difficulty range: 800-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 127 (Div. 1)

Solutions for Codeforces Round 127 (Div. 1) (contest 201). 4/5 problems verified against sample I/O. Difficulty range: 1700-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 127 (Div. 2)

Solutions for Codeforces Round 127 (Div. 2) (contest 202). 2/2 problems verified against sample I/O. Difficulty range: 800-1700.
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Practice › Codeforces Solutions ›

Codeforces Round 128 (Div. 2)

Solutions for Codeforces Round 128 (Div. 2) (contest 203). 4/5 problems verified against sample I/O. Difficulty range: 1200-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 129 (Div. 1)

Solutions for Codeforces Round 129 (Div. 1) (contest 204). 4/5 problems verified against sample I/O. Difficulty range: 1500-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 129 (Div. 2)

Solutions for Codeforces Round 129 (Div. 2) (contest 205). 2/2 problems verified against sample I/O. Difficulty range: 900-1400.
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Practice › Codeforces Solutions ›

Abbyy Cup 2.0 - Final (unofficial)

Solutions for Abbyy Cup 2.0 - Final (unofficial) (contest 207). 14/17 problems verified against sample I/O. Difficulty range: 1600-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 130 (Div. 2)

Solutions for Codeforces Round 130 (Div. 2) (contest 208). 4/4 problems verified against sample I/O. Difficulty range: 900-2100.
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Practice › Codeforces Solutions ›

VK Cup 2012 Finals, Practice Session

Solutions for VK Cup 2012 Finals, Practice Session (contest 209). 3/3 problems verified against sample I/O. Difficulty range: 1600-2400.
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Practice › Codeforces Solutions ›

VK Cup 2012 Finals (unofficial online-version)

Solutions for VK Cup 2012 Finals (unofficial online-version) (contest 212). 1/5 problems verified against sample I/O. Difficulty range: 1500-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 131 (Div. 1)

Solutions for Codeforces Round 131 (Div. 1) (contest 213). 3/5 problems verified against sample I/O. Difficulty range: 1700-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 131 (Div. 2)

Solutions for Codeforces Round 131 (Div. 2) (contest 214). 2/2 problems verified against sample I/O. Difficulty range: 800-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 132 (Div. 2)

Solutions for Codeforces Round 132 (Div. 2) (contest 215). 4/5 problems verified against sample I/O. Difficulty range: 900-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 133 (Div. 2)

Solutions for Codeforces Round 133 (Div. 2) (contest 216). 3/5 problems verified against sample I/O. Difficulty range: 1200-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 134 (Div. 1)

Solutions for Codeforces Round 134 (Div. 1) (contest 217). 3/4 problems verified against sample I/O. Difficulty range: 1200-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 134 (Div. 2)

Solutions for Codeforces Round 134 (Div. 2) (contest 218). 0/2 problems verified against sample I/O. Difficulty range: 1100-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 135 (Div. 2)

Solutions for Codeforces Round 135 (Div. 2) (contest 219). 3/3 problems verified against sample I/O. Difficulty range: 1000-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 136 (Div. 1)

Solutions for Codeforces Round 136 (Div. 1) (contest 220). 3/4 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 136 (Div. 2)

Solutions for Codeforces Round 136 (Div. 2) (contest 221). 2/2 problems verified against sample I/O. Difficulty range: 1000-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 137 (Div. 2)

Solutions for Codeforces Round 137 (Div. 2) (contest 222). 3/4 problems verified against sample I/O. Difficulty range: 1200-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 138 (Div. 1)

Solutions for Codeforces Round 138 (Div. 1) (contest 223). 3/4 problems verified against sample I/O. Difficulty range: 1700-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 138 (Div. 2)

Solutions for Codeforces Round 138 (Div. 2) (contest 224). 2/2 problems verified against sample I/O. Difficulty range: 1100-1500.
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Practice › Codeforces Solutions ›

Codeforces Round 139 (Div. 2)

Solutions for Codeforces Round 139 (Div. 2) (contest 225). 3/4 problems verified against sample I/O. Difficulty range: 1600-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 140 (Div. 1)

Solutions for Codeforces Round 140 (Div. 1) (contest 226). 4/5 problems verified against sample I/O. Difficulty range: 1400-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 140 (Div. 2)

Solutions for Codeforces Round 140 (Div. 2) (contest 227). 2/2 problems verified against sample I/O. Difficulty range: 1100-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 141 (Div. 2)

Solutions for Codeforces Round 141 (Div. 2) (contest 228). 2/4 problems verified against sample I/O. Difficulty range: 800-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 142 (Div. 1)

Solutions for Codeforces Round 142 (Div. 1) (contest 229). 5/5 problems verified against sample I/O. Difficulty range: 1500-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 142 (Div. 2)

Solutions for Codeforces Round 142 (Div. 2) (contest 230). 2/2 problems verified against sample I/O. Difficulty range: 1000-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 143 (Div. 2)

Solutions for Codeforces Round 143 (Div. 2) (contest 231). 3/3 problems verified against sample I/O. Difficulty range: 800-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 144 (Div. 1)

Solutions for Codeforces Round 144 (Div. 1) (contest 232). 2/4 problems verified against sample I/O. Difficulty range: 1600-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 144 (Div. 2)

Solutions for Codeforces Round 144 (Div. 2) (contest 233). 1/2 problems verified against sample I/O. Difficulty range: 800-1400.
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Practice › Codeforces Solutions ›

Codeforces Round 145 (Div. 2, ACM-ICPC Rules)

Solutions for Codeforces Round 145 (Div. 2, ACM-ICPC Rules) (contest 234). 2/5 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 146 (Div. 1)

Solutions for Codeforces Round 146 (Div. 1) (contest 235). 3/4 problems verified against sample I/O. Difficulty range: 1600-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 146 (Div. 2)

Solutions for Codeforces Round 146 (Div. 2) (contest 236). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 147 (Div. 2)

Solutions for Codeforces Round 147 (Div. 2) (contest 237). 3/3 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 148 (Div. 1)

Solutions for Codeforces Round 148 (Div. 1) (contest 238). 4/5 problems verified against sample I/O. Difficulty range: 1300-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 148 (Div. 2)

Solutions for Codeforces Round 148 (Div. 2) (contest 239). 1/2 problems verified against sample I/O. Difficulty range: 1200-1500.
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Practice › Codeforces Solutions ›

Codeforces Round 145 (Div. 1, ACM-ICPC Rules)

Solutions for Codeforces Round 145 (Div. 1, ACM-ICPC Rules) (contest 240). 2/2 problems verified against sample I/O. Difficulty range: 2600-2800.
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Practice › Codeforces Solutions ›

Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)

Solutions for Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) (contest 241). 3/4 problems verified against sample I/O. Difficulty range: 1900-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 149 (Div. 2)

Solutions for Codeforces Round 149 (Div. 2) (contest 242). 3/5 problems verified against sample I/O. Difficulty range: 1100-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 150 (Div. 1)

Solutions for Codeforces Round 150 (Div. 1) (contest 243). 2/5 problems verified against sample I/O. Difficulty range: 1600-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 150 (Div. 2)

Solutions for Codeforces Round 150 (Div. 2) (contest 244). 1/2 problems verified against sample I/O. Difficulty range: 900-1600.
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Practice › Codeforces Solutions ›

CROC-MBTU 2012, Elimination Round (ACM-ICPC)

Solutions for CROC-MBTU 2012, Elimination Round (ACM-ICPC) (contest 245). 8/8 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 151 (Div. 2)

Solutions for Codeforces Round 151 (Div. 2) (contest 246). 3/3 problems verified against sample I/O. Difficulty range: 900-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 152 (Div. 2)

Solutions for Codeforces Round 152 (Div. 2) (contest 248). 3/5 problems verified against sample I/O. Difficulty range: 800-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 152 (Div. 1)

Solutions for Codeforces Round 152 (Div. 1) (contest 249). 0/2 problems verified against sample I/O. Difficulty range: 2600-2700.
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Practice › Codeforces Solutions ›

CROC-MBTU 2012, Final Round (Online version, Div. 2)

Solutions for CROC-MBTU 2012, Final Round (Online version, Div. 2) (contest 250). 2/5 problems verified against sample I/O. Difficulty range: 1000-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 153 (Div. 1)

Solutions for Codeforces Round 153 (Div. 1) (contest 251). 2/5 problems verified against sample I/O. Difficulty range: 1300-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 153 (Div. 2)

Solutions for Codeforces Round 153 (Div. 2) (contest 252). 1/2 problems verified against sample I/O. Difficulty range: 1100-1800.
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Practice › Codeforces Solutions ›

Codeforces Round 154 (Div. 2)

Solutions for Codeforces Round 154 (Div. 2) (contest 253). 5/5 problems verified against sample I/O. Difficulty range: 1100-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 155 (Div. 2)

Solutions for Codeforces Round 155 (Div. 2) (contest 254). 2/5 problems verified against sample I/O. Difficulty range: 1200-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 156 (Div. 2)

Solutions for Codeforces Round 156 (Div. 2) (contest 255). 5/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 156 (Div. 1)

Solutions for Codeforces Round 156 (Div. 1) (contest 256). 1/2 problems verified against sample I/O. Difficulty range: 2400-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 159 (Div. 2)

Solutions for Codeforces Round 159 (Div. 2) (contest 257). 4/4 problems verified against sample I/O. Difficulty range: 1100-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 157 (Div. 1)

Solutions for Codeforces Round 157 (Div. 1) (contest 258). 1/2 problems verified against sample I/O. Difficulty range: 2000-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 157 (Div. 2)

Solutions for Codeforces Round 157 (Div. 2) (contest 259). 1/1 problems verified against sample I/O. Difficulty range: 1000-1000.
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Practice › Codeforces Solutions ›

Codeforces Round 158 (Div. 2)

Solutions for Codeforces Round 158 (Div. 2) (contest 260). 0/3 problems verified against sample I/O. Difficulty range: 1400-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 160 (Div. 1)

Solutions for Codeforces Round 160 (Div. 1) (contest 261). 3/3 problems verified against sample I/O. Difficulty range: 1400-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 160 (Div. 2)

Solutions for Codeforces Round 160 (Div. 2) (contest 262). 0/1 problems verified against sample I/O. Difficulty range: 800-800.
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Practice › Codeforces Solutions ›

Codeforces Round 161 (Div. 2)

Solutions for Codeforces Round 161 (Div. 2) (contest 263). 1/3 problems verified against sample I/O. Difficulty range: 800-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 162 (Div. 1)

Solutions for Codeforces Round 162 (Div. 1) (contest 264). 1/1 problems verified against sample I/O. Difficulty range: 1200-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 162 (Div. 2)

Solutions for Codeforces Round 162 (Div. 2) (contest 265). 1/2 problems verified against sample I/O. Difficulty range: 800-1000.
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Practice › Codeforces Solutions ›

Codeforces Round 163 (Div. 2)

Solutions for Codeforces Round 163 (Div. 2) (contest 266). 2/4 problems verified against sample I/O. Difficulty range: 800-2500.
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Practice › Codeforces Solutions ›

Codeforces Testing Round 5

Solutions for Codeforces Testing Round 5 (contest 267). 2/2 problems verified against sample I/O. Difficulty range: 900-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 164 (Div. 2)

Solutions for Codeforces Round 164 (Div. 2) (contest 268). 3/4 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 165 (Div. 1)

Solutions for Codeforces Round 165 (Div. 1) (contest 269). 2/4 problems verified against sample I/O. Difficulty range: 1700-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 165 (Div. 2)

Solutions for Codeforces Round 165 (Div. 2) (contest 270). 2/2 problems verified against sample I/O. Difficulty range: 1100-1400.
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Practice › Codeforces Solutions ›

Codeforces Round 166 (Div. 2)

Solutions for Codeforces Round 166 (Div. 2) (contest 271). 3/4 problems verified against sample I/O. Difficulty range: 1300-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 167 (Div. 2)

Solutions for Codeforces Round 167 (Div. 2) (contest 272). 2/3 problems verified against sample I/O. Difficulty range: 1400-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 167 (Div. 1)

Solutions for Codeforces Round 167 (Div. 1) (contest 273). 0/1 problems verified against sample I/O. Difficulty range: 2400-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 168 (Div. 1)

Solutions for Codeforces Round 168 (Div. 1) (contest 274). 2/2 problems verified against sample I/O. Difficulty range: 1500-1800.
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Practice › Codeforces Solutions ›

Codeforces Round 169 (Div. 2)

Solutions for Codeforces Round 169 (Div. 2) (contest 276). 2/3 problems verified against sample I/O. Difficulty range: 900-1700.
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Practice › Codeforces Solutions ›

Codeforces Round 170 (Div. 1)

Solutions for Codeforces Round 170 (Div. 1) (contest 277). 1/3 problems verified against sample I/O. Difficulty range: 1400-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 171 (Div. 2)

Solutions for Codeforces Round 171 (Div. 2) (contest 279). 1/1 problems verified against sample I/O. Difficulty range: 1400-1400.
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Practice › Codeforces Solutions ›

Codeforces Round 172 (Div. 1)

Solutions for Codeforces Round 172 (Div. 1) (contest 280). 1/2 problems verified against sample I/O. Difficulty range: 1800-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 172 (Div. 2)

Solutions for Codeforces Round 172 (Div. 2) (contest 281). 1/1 problems verified against sample I/O. Difficulty range: 800-800.
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Practice › Codeforces Solutions ›

Codeforces Round 173 (Div. 2)

Solutions for Codeforces Round 173 (Div. 2) (contest 282). 2/2 problems verified against sample I/O. Difficulty range: 1500-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 174 (Div. 1)

Solutions for Codeforces Round 174 (Div. 1) (contest 283). 2/3 problems verified against sample I/O. Difficulty range: 1600-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 175 (Div. 2)

Solutions for Codeforces Round 175 (Div. 2) (contest 285). 2/2 problems verified against sample I/O. Difficulty range: 1200-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 176 (Div. 1)

Solutions for Codeforces Round 176 (Div. 1) (contest 286). 2/2 problems verified against sample I/O. Difficulty range: 2200-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 177 (Div. 1)

Solutions for Codeforces Round 177 (Div. 1) (contest 288). 1/2 problems verified against sample I/O. Difficulty range: 1700-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 177 (Div. 2)

Solutions for Codeforces Round 177 (Div. 2) (contest 289). 1/1 problems verified against sample I/O. Difficulty range: 1400-1400.
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Practice › Codeforces Solutions ›

April Fools Day Contest 2013

Solutions for April Fools Day Contest 2013 (contest 290). 3/4 problems verified against sample I/O. Difficulty range: 1400-2800.
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Practice › Codeforces Solutions ›

Croc Champ 2013 - Qualification Round

Solutions for Croc Champ 2013 - Qualification Round (contest 291). 2/2 problems verified against sample I/O. Difficulty range: 1300-2000.
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Practice › Codeforces Solutions ›

Croc Champ 2013 - Round 1

Solutions for Croc Champ 2013 - Round 1 (contest 292). 4/4 problems verified against sample I/O. Difficulty range: 1100-2000.
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Practice › Codeforces Solutions ›

Croc Champ 2013 - Round 2

Solutions for Croc Champ 2013 - Round 2 (contest 293). 4/4 problems verified against sample I/O. Difficulty range: 1500-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 178 (Div. 2)

Solutions for Codeforces Round 178 (Div. 2) (contest 294). 3/4 problems verified against sample I/O. Difficulty range: 800-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 179 (Div. 1)

Solutions for Codeforces Round 179 (Div. 1) (contest 295). 4/4 problems verified against sample I/O. Difficulty range: 1700-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 179 (Div. 2)

Solutions for Codeforces Round 179 (Div. 2) (contest 296). 1/1 problems verified against sample I/O. Difficulty range: 1100-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 180 (Div. 1)

Solutions for Codeforces Round 180 (Div. 1) (contest 297). 2/3 problems verified against sample I/O. Difficulty range: 1600-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 181 (Div. 2)

Solutions for Codeforces Round 181 (Div. 2) (contest 300). 2/3 problems verified against sample I/O. Difficulty range: 1500-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 182 (Div. 1)

Solutions for Codeforces Round 182 (Div. 1) (contest 301). 5/5 problems verified against sample I/O. Difficulty range: 1800-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 182 (Div. 2)

Solutions for Codeforces Round 182 (Div. 2) (contest 302). 2/2 problems verified against sample I/O. Difficulty range: 800-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 183 (Div. 1)

Solutions for Codeforces Round 183 (Div. 1) (contest 303). 3/5 problems verified against sample I/O. Difficulty range: 1300-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 183 (Div. 2)

Solutions for Codeforces Round 183 (Div. 2) (contest 304). 2/2 problems verified against sample I/O. Difficulty range: 1200-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 184 (Div. 2)

Solutions for Codeforces Round 184 (Div. 2) (contest 305). 5/5 problems verified against sample I/O. Difficulty range: 1600-2300.
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Practice › Codeforces Solutions ›

Testing Round 6

Solutions for Testing Round 6 (contest 306). 1/4 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Croc Champ 2013 - Finals (online version, Div. 1)

Solutions for Croc Champ 2013 - Finals (online version, Div. 1) (contest 309). 4/4 problems verified against sample I/O. Difficulty range: 1900-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 185 (Div. 1)

Solutions for Codeforces Round 185 (Div. 1) (contest 311). 3/4 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 185 (Div. 2)

Solutions for Codeforces Round 185 (Div. 2) (contest 312). 0/1 problems verified against sample I/O. Difficulty range: 1100-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 186 (Div. 2)

Solutions for Codeforces Round 186 (Div. 2) (contest 313). 1/3 problems verified against sample I/O. Difficulty range: 900-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 187 (Div. 1)

Solutions for Codeforces Round 187 (Div. 1) (contest 314). 2/3 problems verified against sample I/O. Difficulty range: 2000-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 187 (Div. 2)

Solutions for Codeforces Round 187 (Div. 2) (contest 315). 1/1 problems verified against sample I/O. Difficulty range: 1400-1400.
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Practice › Codeforces Solutions ›

ABBYY Cup 3.0

Solutions for ABBYY Cup 3.0 (contest 316). 6/12 problems verified against sample I/O. Difficulty range: 1100-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 188 (Div. 1)

Solutions for Codeforces Round 188 (Div. 1) (contest 317). 3/3 problems verified against sample I/O. Difficulty range: 2300-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 189 (Div. 1)

Solutions for Codeforces Round 189 (Div. 1) (contest 319). 1/2 problems verified against sample I/O. Difficulty range: 2100-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 189 (Div. 2)

Solutions for Codeforces Round 189 (Div. 2) (contest 320). 0/1 problems verified against sample I/O. Difficulty range: 1500-1500.
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Practice › Codeforces Solutions ›

Codeforces Round 190 (Div. 1)

Solutions for Codeforces Round 190 (Div. 1) (contest 321). 2/2 problems verified against sample I/O. Difficulty range: 2100-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 190 (Div. 2)

Solutions for Codeforces Round 190 (Div. 2) (contest 322). 1/1 problems verified against sample I/O. Difficulty range: 1000-1000.
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Practice › Codeforces Solutions ›

Testing Round 7

Solutions for Testing Round 7 (contest 323). 1/1 problems verified against sample I/O. Difficulty range: 1600-1600.
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Practice › Codeforces Solutions ›

MemSQL start[c]up Round 1

Solutions for MemSQL start[c]up Round 1 (contest 325). 2/2 problems verified against sample I/O. Difficulty range: 1500-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 191 (Div. 2)

Solutions for Codeforces Round 191 (Div. 2) (contest 327). 2/3 problems verified against sample I/O. Difficulty range: 1200-2300.
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Practice › Codeforces Solutions ›

Testing Round 8

Solutions for Testing Round 8 (contest 328). 0/2 problems verified against sample I/O. Difficulty range: 1500-1800.
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Codeforces Round 192 (Div. 1)

Solutions for Codeforces Round 192 (Div. 1) (contest 329). 1/3 problems verified against sample I/O. Difficulty range: 1500-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 192 (Div. 2)

Solutions for Codeforces Round 192 (Div. 2) (contest 330). 0/1 problems verified against sample I/O. Difficulty range: 1300-1300.
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Practice › Codeforces Solutions ›

ABBYY Cup 3.0 - Finals (online version)

Solutions for ABBYY Cup 3.0 - Finals (online version) (contest 331). 3/7 problems verified against sample I/O. Difficulty range: 1100-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 193 (Div. 2)

Solutions for Codeforces Round 193 (Div. 2) (contest 332). 0/2 problems verified against sample I/O. Difficulty range: 2200-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 194 (Div. 1)

Solutions for Codeforces Round 194 (Div. 1) (contest 333). 1/2 problems verified against sample I/O. Difficulty range: 1600-2100.
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Practice › Codeforces Solutions ›

MemSQL start[c]up Round 2 - online version

Solutions for MemSQL start[c]up Round 2 - online version (contest 335). 1/3 problems verified against sample I/O. Difficulty range: 1900-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 195 (Div. 2)

Solutions for Codeforces Round 195 (Div. 2) (contest 336). 2/2 problems verified against sample I/O. Difficulty range: 2100-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 196 (Div. 1)

Solutions for Codeforces Round 196 (Div. 1) (contest 338). 1/1 problems verified against sample I/O. Difficulty range: 2900-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 197 (Div. 2)

Solutions for Codeforces Round 197 (Div. 2) (contest 339). 1/1 problems verified against sample I/O. Difficulty range: 800-800.
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Practice › Codeforces Solutions ›

Codeforces Round 198 (Div. 2)

Solutions for Codeforces Round 198 (Div. 2) (contest 340). 1/1 problems verified against sample I/O. Difficulty range: 1600-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 198 (Div. 1)

Solutions for Codeforces Round 198 (Div. 1) (contest 341). 0/1 problems verified against sample I/O. Difficulty range: 2500-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 199 (Div. 2)

Solutions for Codeforces Round 199 (Div. 2) (contest 342). 2/3 problems verified against sample I/O. Difficulty range: 1200-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 200 (Div. 1)

Solutions for Codeforces Round 200 (Div. 1) (contest 343). 0/1 problems verified against sample I/O. Difficulty range: 1900-1900.
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Practice › Codeforces Solutions ›

Friday the 13th, Programmers Day

Solutions for Friday the 13th, Programmers Day (contest 345). 2/3 problems verified against sample I/O. Difficulty range: 1500-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 201 (Div. 1)

Solutions for Codeforces Round 201 (Div. 1) (contest 346). 1/1 problems verified against sample I/O. Difficulty range: 1600-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 201 (Div. 2)

Solutions for Codeforces Round 201 (Div. 2) (contest 347). 1/1 problems verified against sample I/O. Difficulty range: 1100-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 202 (Div. 1)

Solutions for Codeforces Round 202 (Div. 1) (contest 348). 1/3 problems verified against sample I/O. Difficulty range: 1600-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 202 (Div. 2)

Solutions for Codeforces Round 202 (Div. 2) (contest 349). 1/1 problems verified against sample I/O. Difficulty range: 1700-1700.
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Practice › Codeforces Solutions ›

Codeforces Round 203 (Div. 2)

Solutions for Codeforces Round 203 (Div. 2) (contest 350). 1/4 problems verified against sample I/O. Difficulty range: 1200-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 204 (Div. 1)

Solutions for Codeforces Round 204 (Div. 1) (contest 351). 1/2 problems verified against sample I/O. Difficulty range: 1800-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 204 (Div. 2)

Solutions for Codeforces Round 204 (Div. 2) (contest 352). 2/2 problems verified against sample I/O. Difficulty range: 1000-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 205 (Div. 2)

Solutions for Codeforces Round 205 (Div. 2) (contest 353). 2/2 problems verified against sample I/O. Difficulty range: 1200-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 206 (Div. 1)

Solutions for Codeforces Round 206 (Div. 1) (contest 354). 2/5 problems verified against sample I/O. Difficulty range: 1500-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 235 (Div. 2)

Solutions for Codeforces Round 235 (Div. 2) (contest 401). 2/3 problems verified against sample I/O. Difficulty range: 800-2000.
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Practice › Codeforces Solutions ›

Codeforces Round 236 (Div. 2)

Solutions for Codeforces Round 236 (Div. 2) (contest 402). 1/4 problems verified against sample I/O. Difficulty range: 1100-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 236 (Div. 1)

Solutions for Codeforces Round 236 (Div. 1) (contest 403). 0/2 problems verified against sample I/O. Difficulty range: 2300-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 237 (Div. 2)

Solutions for Codeforces Round 237 (Div. 2) (contest 404). 0/4 problems verified against sample I/O. Difficulty range: 1000-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 238 (Div. 2)

Solutions for Codeforces Round 238 (Div. 2) (contest 405). 0/4 problems verified against sample I/O. Difficulty range: 900-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 238 (Div. 1)

Solutions for Codeforces Round 238 (Div. 1) (contest 406). 0/2 problems verified against sample I/O. Difficulty range: 2200-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 239 (Div. 1)

Solutions for Codeforces Round 239 (Div. 1) (contest 407). 0/4 problems verified against sample I/O. Difficulty range: 1600-3100.
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Practice › Codeforces Solutions ›

April Fools Day Contest 2014

Solutions for April Fools Day Contest 2014 (contest 409). 0/6 problems verified against sample I/O. Difficulty range: 1500-2200.
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Practice › Codeforces Solutions ›

Coder-Strike 2014 - Qualification Round

Solutions for Coder-Strike 2014 - Qualification Round (contest 411). 0/1 problems verified against sample I/O. Difficulty range: 1700-1700.
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Practice › Codeforces Solutions ›

Coder-Strike 2014 - Round 1

Solutions for Coder-Strike 2014 - Round 1 (contest 412). 1/4 problems verified against sample I/O. Difficulty range: 900-2000.
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Practice › Codeforces Solutions ›

Coder-Strike 2014 - Round 2

Solutions for Coder-Strike 2014 - Round 2 (contest 413). 4/5 problems verified against sample I/O. Difficulty range: 1200-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 240 (Div. 1)

Solutions for Codeforces Round 240 (Div. 1) (contest 414). 2/5 problems verified against sample I/O. Difficulty range: 1400-3200.
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Practice › Codeforces Solutions ›

Codeforces Round 240 (Div. 2)

Solutions for Codeforces Round 240 (Div. 2) (contest 415). 2/2 problems verified against sample I/O. Difficulty range: 900-1500.
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Practice › Codeforces Solutions ›

Codeforces Round 241 (Div. 2)

Solutions for Codeforces Round 241 (Div. 2) (contest 416). 4/5 problems verified against sample I/O. Difficulty range: 1300-2500.
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Practice › Codeforces Solutions ›

RCC 2014 Warmup (Div. 2)

Solutions for RCC 2014 Warmup (Div. 2) (contest 417). 4/5 problems verified against sample I/O. Difficulty range: 1400-2400.
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Practice › Codeforces Solutions ›

RCC 2014 Warmup (Div. 1)

Solutions for RCC 2014 Warmup (Div. 1) (contest 418). 1/2 problems verified against sample I/O. Difficulty range: 2800-3100.
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Practice › Codeforces Solutions ›

Coder-Strike 2014 - Finals (online edition, Div. 1)

Solutions for Coder-Strike 2014 - Finals (online edition, Div. 1) (contest 420). 4/5 problems verified against sample I/O. Difficulty range: 1000-2600.
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Practice › Codeforces Solutions ›

Coder-Strike 2014 - Finals (online edition, Div. 2)

Solutions for Coder-Strike 2014 - Finals (online edition, Div. 2) (contest 421). 2/2 problems verified against sample I/O. Difficulty range: 800-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 242 (Div. 2)

Solutions for Codeforces Round 242 (Div. 2) (contest 424). 0/5 problems verified against sample I/O. Difficulty range: 900-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 243 (Div. 1)

Solutions for Codeforces Round 243 (Div. 1) (contest 425). 1/3 problems verified against sample I/O. Difficulty range: 2300-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 243 (Div. 2)

Solutions for Codeforces Round 243 (Div. 2) (contest 426). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 244 (Div. 2)

Solutions for Codeforces Round 244 (Div. 2) (contest 427). 5/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 245 (Div. 1)

Solutions for Codeforces Round 245 (Div. 1) (contest 429). 5/5 problems verified against sample I/O. Difficulty range: 1300-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 245 (Div. 2)

Solutions for Codeforces Round 245 (Div. 2) (contest 430). 1/2 problems verified against sample I/O. Difficulty range: 1400-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 247 (Div. 2)

Solutions for Codeforces Round 247 (Div. 2) (contest 431). 5/5 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 246 (Div. 2)

Solutions for Codeforces Round 246 (Div. 2) (contest 432). 2/2 problems verified against sample I/O. Difficulty range: 800-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 248 (Div. 2)

Solutions for Codeforces Round 248 (Div. 2) (contest 433). 0/1 problems verified against sample I/O. Difficulty range: 1100-1100.
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Practice › Codeforces Solutions ›

Codeforces Round 249 (Div. 2)

Solutions for Codeforces Round 249 (Div. 2) (contest 435). 1/1 problems verified against sample I/O. Difficulty range: 1000-1000.
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Practice › Codeforces Solutions ›

Zepto Code Rush 2014

Solutions for Zepto Code Rush 2014 (contest 436). 0/3 problems verified against sample I/O. Difficulty range: 1400-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 250 (Div. 2)

Solutions for Codeforces Round 250 (Div. 2) (contest 437). 1/1 problems verified against sample I/O. Difficulty range: 2500-2500.
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Practice › Codeforces Solutions ›

Codeforces Round 251 (Div. 2)

Solutions for Codeforces Round 251 (Div. 2) (contest 439). 2/2 problems verified against sample I/O. Difficulty range: 900-1700.
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Practice › Codeforces Solutions ›

Testing Round 10

Solutions for Testing Round 10 (contest 440). 1/1 problems verified against sample I/O. Difficulty range: 1600-1600.
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Practice › Codeforces Solutions ›

Codeforces Round 252 (Div. 2)

Solutions for Codeforces Round 252 (Div. 2) (contest 441). 1/3 problems verified against sample I/O. Difficulty range: 1000-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 253 (Div. 1)

Solutions for Codeforces Round 253 (Div. 1) (contest 442). 1/2 problems verified against sample I/O. Difficulty range: 1800-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 253 (Div. 2)

Solutions for Codeforces Round 253 (Div. 2) (contest 443). 1/1 problems verified against sample I/O. Difficulty range: 800-800.
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Practice › Codeforces Solutions ›

Codeforces Round 254 (Div. 1)

Solutions for Codeforces Round 254 (Div. 1) (contest 444). 2/3 problems verified against sample I/O. Difficulty range: 1600-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 254 (Div. 2)

Solutions for Codeforces Round 254 (Div. 2) (contest 445). 1/1 problems verified against sample I/O. Difficulty range: 1200-1200.
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Practice › Codeforces Solutions ›

Codeforces Round #FF (Div. 1)

Solutions for Codeforces Round #FF (Div. 1) (contest 446). 0/3 problems verified against sample I/O. Difficulty range: 2400-3100.
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Practice › Codeforces Solutions ›

Codeforces Round #FF (Div. 2)

Solutions for Codeforces Round #FF (Div. 2) (contest 447). 1/1 problems verified against sample I/O. Difficulty range: 1000-1000.
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Practice › Codeforces Solutions ›

Codeforces Round 256 (Div. 2)

Solutions for Codeforces Round 256 (Div. 2) (contest 448). 2/3 problems verified against sample I/O. Difficulty range: 800-2200.
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Practice › Codeforces Solutions ›

Codeforces Round 257 (Div. 1)

Solutions for Codeforces Round 257 (Div. 1) (contest 449). 3/5 problems verified against sample I/O. Difficulty range: 1700-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 257 (Div. 2)

Solutions for Codeforces Round 257 (Div. 2) (contest 450). 2/2 problems verified against sample I/O. Difficulty range: 1000-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 258 (Div. 2)

Solutions for Codeforces Round 258 (Div. 2) (contest 451). 5/5 problems verified against sample I/O. Difficulty range: 900-2300.
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Practice › Codeforces Solutions ›

MemSQL Start[c]UP 2.0 - Round 1

Solutions for MemSQL Start[c]UP 2.0 - Round 1 (contest 452). 4/5 problems verified against sample I/O. Difficulty range: 1000-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 259 (Div. 1)

Solutions for Codeforces Round 259 (Div. 1) (contest 453). 4/5 problems verified against sample I/O. Difficulty range: 1600-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 259 (Div. 2)

Solutions for Codeforces Round 259 (Div. 2) (contest 454). 2/2 problems verified against sample I/O. Difficulty range: 800-1200.
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Practice › Codeforces Solutions ›

Codeforces Round 260 (Div. 1)

Solutions for Codeforces Round 260 (Div. 1) (contest 455). 5/5 problems verified against sample I/O. Difficulty range: 1500-2900.
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Practice › Codeforces Solutions ›

Codeforces Round 260 (Div. 2)

Solutions for Codeforces Round 260 (Div. 2) (contest 456). 2/2 problems verified against sample I/O. Difficulty range: 1100-1200.
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Practice › Codeforces Solutions ›

MemSQL Start[c]UP 2.0 - Round 2

Solutions for MemSQL Start[c]UP 2.0 - Round 2 (contest 457). 4/6 problems verified against sample I/O. Difficulty range: 1700-3200.
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Practice › Codeforces Solutions ›

Codeforces Round 261 (Div. 2)

Solutions for Codeforces Round 261 (Div. 2) (contest 459). 4/5 problems verified against sample I/O. Difficulty range: 1200-1900.
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Practice › Codeforces Solutions ›

Codeforces Round 262 (Div. 2)

Solutions for Codeforces Round 262 (Div. 2) (contest 460). 4/5 problems verified against sample I/O. Difficulty range: 900-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 263 (Div. 1)

Solutions for Codeforces Round 263 (Div. 1) (contest 461). 3/5 problems verified against sample I/O. Difficulty range: 1200-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 263 (Div. 2)

Solutions for Codeforces Round 263 (Div. 2) (contest 462). 2/2 problems verified against sample I/O. Difficulty range: 1000-1300.
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Practice › Codeforces Solutions ›

Codeforces Round 264 (Div. 2)

Solutions for Codeforces Round 264 (Div. 2) (contest 463). 5/5 problems verified against sample I/O. Difficulty range: 1100-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 265 (Div. 1)

Solutions for Codeforces Round 265 (Div. 1) (contest 464). 0/3 problems verified against sample I/O. Difficulty range: 2000-3000.
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Practice › Codeforces Solutions ›

Codeforces Round 265 (Div. 2)

Solutions for Codeforces Round 265 (Div. 2) (contest 465). 0/2 problems verified against sample I/O. Difficulty range: 900-1000.
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Practice › Codeforces Solutions ›

Codeforces Round 266 (Div. 2)

Solutions for Codeforces Round 266 (Div. 2) (contest 466). 3/5 problems verified against sample I/O. Difficulty range: 1200-2100.
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Practice › Codeforces Solutions ›

Codeforces Round 267 (Div. 2)

Solutions for Codeforces Round 267 (Div. 2) (contest 467). 3/5 problems verified against sample I/O. Difficulty range: 800-2400.
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Practice › Codeforces Solutions ›

Codeforces Round 268 (Div. 1)

Solutions for Codeforces Round 268 (Div. 1) (contest 468). 3/5 problems verified against sample I/O. Difficulty range: 1500-3100.
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Practice › Codeforces Solutions ›

Codeforces Round 268 (Div. 2)

Solutions for Codeforces Round 268 (Div. 2) (contest 469). 2/2 problems verified against sample I/O. Difficulty range: 800-1300.
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Practice › Codeforces Solutions ›

Surprise Language Round 7

Solutions for Surprise Language Round 7 (contest 470). 8/8 problems verified against sample I/O. Difficulty range: 1400-2300.
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Practice › Codeforces Solutions ›

Codeforces Round 269 (Div. 2)

Solutions for Codeforces Round 269 (Div. 2) (contest 471). 3/5 problems verified against sample I/O. Difficulty range: 1100-2700.
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Practice › Codeforces Solutions ›

Codeforces Round 270

Solutions for Codeforces Round 270 (contest 472). 5/7 problems verified against sample I/O. Difficulty range: 800-2800.
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Practice › Codeforces Solutions ›

Codeforces Round 271 (Div. 2)

Solutions for Codeforces Round 271 (Div. 2) (contest 474). 6/6 problems verified against sample I/O. Difficulty range: 900-2100.
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Practice › Codeforces Solutions ›

Bayan 2015 Contest Warm Up

Solutions for Bayan 2015 Contest Warm Up (contest 475). 4/6 problems verified against sample I/O. Difficulty range: 1100-2900.
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Codeforces Round 272 (Div. 2)

Solutions for Codeforces Round 272 (Div. 2) (contest 476). 5/5 problems verified against sample I/O. Difficulty range: 1000-2200.
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Codeforces Round 272 (Div. 1)

Solutions for Codeforces Round 272 (Div. 1) (contest 477). 0/2 problems verified against sample I/O. Difficulty range: 2700-3100.
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Codeforces Round 273 (Div. 2)

Solutions for Codeforces Round 273 (Div. 2) (contest 478). 4/5 problems verified against sample I/O. Difficulty range: 1100-2900.
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Codeforces Round 274 (Div. 2)

Solutions for Codeforces Round 274 (Div. 2) (contest 479). 3/5 problems verified against sample I/O. Difficulty range: 1000-1900.
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Codeforces Round 274 (Div. 1)

Solutions for Codeforces Round 274 (Div. 1) (contest 480). 1/2 problems verified against sample I/O. Difficulty range: 2600-2800.
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Codeforces Round 275 (Div. 1)

Solutions for Codeforces Round 275 (Div. 1) (contest 482). 0/4 problems verified against sample I/O. Difficulty range: 1200-3200.
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Codeforces Round 275 (Div. 2)

Solutions for Codeforces Round 275 (Div. 2) (contest 483). 0/2 problems verified against sample I/O. Difficulty range: 1100-1800.
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Codeforces Round 276 (Div. 1)

Solutions for Codeforces Round 276 (Div. 1) (contest 484). 0/4 problems verified against sample I/O. Difficulty range: 1700-2500.
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Codeforces Round 276 (Div. 2)

Solutions for Codeforces Round 276 (Div. 2) (contest 485). 0/2 problems verified against sample I/O. Difficulty range: 1300-1400.
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Codeforces Round 277 (Div. 2)

Solutions for Codeforces Round 277 (Div. 2) (contest 486). 0/4 problems verified against sample I/O. Difficulty range: 800-2200.
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Codeforces Round 278 (Div. 1)

Solutions for Codeforces Round 278 (Div. 1) (contest 487). 0/4 problems verified against sample I/O. Difficulty range: 1800-3200.
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Codeforces Round 278 (Div. 2)

Solutions for Codeforces Round 278 (Div. 2) (contest 488). 0/2 problems verified against sample I/O. Difficulty range: 1100-1900.
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Codeforces Round 277.5 (Div. 2)

Solutions for Codeforces Round 277.5 (Div. 2) (contest 489). 0/4 problems verified against sample I/O. Difficulty range: 1200-2300.
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Codeforces Round 279 (Div. 2)

Solutions for Codeforces Round 279 (Div. 2) (contest 490). 0/5 problems verified against sample I/O. Difficulty range: 1500-2200.
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Testing Round 11

Solutions for Testing Round 11 (contest 491). 1/3 problems verified against sample I/O. Difficulty range: 1000-2300.
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Codeforces Round 280 (Div. 2)

Solutions for Codeforces Round 280 (Div. 2) (contest 492). 1/3 problems verified against sample I/O. Difficulty range: 1400-2000.
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Codeforces Round 281 (Div. 2)

Solutions for Codeforces Round 281 (Div. 2) (contest 493). 3/5 problems verified against sample I/O. Difficulty range: 1300-2800.
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Codeforces Round 282 (Div. 1)

Solutions for Codeforces Round 282 (Div. 1) (contest 494). 1/4 problems verified against sample I/O. Difficulty range: 2000-3200.
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Codeforces Round 282 (Div. 2)

Solutions for Codeforces Round 282 (Div. 2) (contest 495). 1/2 problems verified against sample I/O. Difficulty range: 1100-1600.
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Codeforces Round 933 (Div. 3)

Solutions for Codeforces Round 933 (Div. 3) (contest 1941). 6/7 problems verified against sample I/O. Difficulty range: 800-2000.
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CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)

Solutions for CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!) (contest 1942). 4/9 problems verified against sample I/O. Difficulty range: 800-3500.
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Practice › Codeforces Solutions ›

Codeforces Round 934 (Div. 1)

Solutions for Codeforces Round 934 (Div. 1) (contest 1943). 1/8 problems verified against sample I/O. Difficulty range: 1300-3500.
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Codeforces Round 934 (Div. 2)

Solutions for Codeforces Round 934 (Div. 2) (contest 1944). 1/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Codeforces Round 935 (Div. 3)

Solutions for Codeforces Round 935 (Div. 3) (contest 1945). 5/8 problems verified against sample I/O. Difficulty range: 800-2600.
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Practice › Codeforces Solutions ›

Codeforces Round 936 (Div. 2)

Solutions for Codeforces Round 936 (Div. 2) (contest 1946). 1/5 problems verified against sample I/O. Difficulty range: 800-2500.
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Educational Codeforces Round 163 (Rated for Div. 2)

Solutions for Educational Codeforces Round 163 (Rated for Div. 2) (contest 1948). 2/6 problems verified against sample I/O. Difficulty range: 800-3100.
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Practice › Codeforces Solutions ›

European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)

Solutions for European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred) (contest 1949). 5/11 problems verified against sample I/O. Difficulty range: 1500-3300.
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Practice › Codeforces Solutions ›

Codeforces Round 937 (Div. 4)

Solutions for Codeforces Round 937 (Div. 4) (contest 1950). 6/7 problems verified against sample I/O. Difficulty range: 800-1900.
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Codeforces Global Round 25

Solutions for Codeforces Global Round 25 (contest 1951). 1/9 problems verified against sample I/O. Difficulty range: 900-3200.
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April Fools Day Contest 2024

Solutions for April Fools Day Contest 2024 (contest 1952). 5/8 problems verified against sample I/O. Difficulty range: -.
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2023 Post World Finals Online ICPC Challenge powered by Huawei

Solutions for 2023 Post World Finals Online ICPC Challenge powered by Huawei (contest 1953). 1/1 problems verified against sample I/O. Difficulty range: -.
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Educational Codeforces Round 164 (Rated for Div. 2)

Solutions for Educational Codeforces Round 164 (Rated for Div. 2) (contest 1954). 2/6 problems verified against sample I/O. Difficulty range: 900-3100.
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Codeforces Round 938 (Div. 3)

Solutions for Codeforces Round 938 (Div. 3) (contest 1955). 5/8 problems verified against sample I/O. Difficulty range: 800-2300.
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Codeforces Round 939 (Div. 2)

Solutions for Codeforces Round 939 (Div. 2) (contest 1956). 3/7 problems verified against sample I/O. Difficulty range: 800-3000.
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Codeforces Round 940 (Div. 2) and CodeCraft-23

Solutions for Codeforces Round 940 (Div. 2) and CodeCraft-23 (contest 1957). 1/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Kotlin Heroes: Episode 10

Solutions for Kotlin Heroes: Episode 10 (contest 1958). 7/10 problems verified against sample I/O. Difficulty range: 1100-3200.
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Codeforces Round 941 (Div. 1)

Solutions for Codeforces Round 941 (Div. 1) (contest 1965). 0/6 problems verified against sample I/O. Difficulty range: 1400-3300.
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Codeforces Round 941 (Div. 2)

Solutions for Codeforces Round 941 (Div. 2) (contest 1966). 0/2 problems verified against sample I/O. Difficulty range: 800-1100.
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Codeforces Round 942 (Div. 1)

Solutions for Codeforces Round 942 (Div. 1) (contest 1967). 1/8 problems verified against sample I/O. Difficulty range: 1400-3500.
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Codeforces Round 943 (Div. 3)

Solutions for Codeforces Round 943 (Div. 3) (contest 1968). 1/2 problems verified against sample I/O. Difficulty range: 800-800.
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Codeforces Round 942 (Div. 2)

Solutions for Codeforces Round 942 (Div. 2) (contest 1972). 0/1 problems verified against sample I/O. Difficulty range: 900-900.
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Codeforces Round 945 (Div. 2)

Solutions for Codeforces Round 945 (Div. 2) (contest 1973). 0/6 problems verified against sample I/O. Difficulty range: 900-3100.
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Codeforces Round 946 (Div. 3)

Solutions for Codeforces Round 946 (Div. 3) (contest 1974). 0/7 problems verified against sample I/O. Difficulty range: 800-2000.
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Codeforces Round 947 (Div. 1 + Div. 2)

Solutions for Codeforces Round 947 (Div. 1 + Div. 2) (contest 1975). 0/9 problems verified against sample I/O. Difficulty range: 800-3500.
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Educational Codeforces Round 166 (Rated for Div. 2)

Solutions for Educational Codeforces Round 166 (Rated for Div. 2) (contest 1976). 0/6 problems verified against sample I/O. Difficulty range: 800-2800.
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Codeforces Round 1091 (Div. 2) and CodeCraft 26

Solutions for Codeforces Round 1091 (Div. 2) and CodeCraft 26 (contest 2217). 0/4 problems verified against sample I/O. Difficulty range: 1000-2600.
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Codeforces Round 1090 (Div. 4)

Solutions for Codeforces Round 1090 (Div. 4) (contest 2218). 1/4 problems verified against sample I/O. Difficulty range: 800-1800.
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Codeforces Round 1093 (Div. 1)

Solutions for Codeforces Round 1093 (Div. 1) (contest 2219). 0/1 problems verified against sample I/O. Difficulty range: -.
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Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)

Solutions for Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2) (contest 2222). 0/6 problems verified against sample I/O. Difficulty range: -.
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Educational Codeforces Round 189 (Rated for Div. 2)

Solutions for Educational Codeforces Round 189 (Rated for Div. 2) (contest 2225). 0/5 problems verified against sample I/O. Difficulty range: -.
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Codeforces Round 1095 (Div. 2)

Solutions for Codeforces Round 1095 (Div. 2) (contest 2226). 0/7 problems verified against sample I/O. Difficulty range: -.
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Codeforces Round 1096 (Div. 3)

Solutions for Codeforces Round 1096 (Div. 3) (contest 2227). 0/8 problems verified against sample I/O. Difficulty range: -.
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