Codeforces Solutions

Codeforces Beta Round 1
Codeforces Beta Round 2
Codeforces Beta Round 3
Codeforces Beta Round 4 (Div. 2 Only)
Codeforces Beta Round 5
Codeforces Beta Round 6 (Div. 2 Only)
Codeforces Beta Round 7
Codeforces Beta Round 8
Codeforces Beta Round 9 (Div. 2 Only)
Codeforces Beta Round 10
Codeforces Beta Round 11
Codeforces Beta Round 12 (Div 2 Only)
Codeforces Beta Round 13
Codeforces Beta Round 14 (Div. 2)
Codeforces Beta Round 15
Codeforces Beta Round 16 (Div. 2 Only)
Codeforces Beta Round 17
Codeforces Beta Round 18 (Div. 2 Only)
Codeforces Beta Round 19
Codeforces Alpha Round 20 (Codeforces format)
Codeforces Alpha Round 21 (Codeforces format)
Codeforces Beta Round 22 (Div. 2 Only)
Codeforces Beta Round 23
Codeforces Beta Round 24
Codeforces Beta Round 25 (Div. 2 Only)
Codeforces Beta Round 26 (Codeforces format)
Codeforces Beta Round 27 (Codeforces format, Div. 2)
Codeforces Beta Round 28 (Codeforces format)
Codeforces Beta Round 29 (Div. 2, Codeforces format)
Codeforces Beta Round 30 (Codeforces format)
Codeforces Beta Round 31 (Div. 2, Codeforces format)
Codeforces Beta Round 32 (Div. 2, Codeforces format)
Codeforces Beta Round 33 (Codeforces format)
Codeforces Beta Round 34 (Div. 2)
Codeforces Beta Round 35 (Div. 2)
Codeforces Beta Round 36
Codeforces Beta Round 37
School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round 38 (ACM-ICPC Rules)
School Team Contest 1 (Winter Computer School 2010/11)
Codeforces Beta Round 39
Codeforces Beta Round 40 (Div. 2)
Codeforces Beta Round 41
Codeforces Beta Round 42 (Div. 2)
School Team Contest 2 (Winter Computer School 2010/11)
School Team Contest 3 (Winter Computer School 2010/11)
School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round 43 (ACM-ICPC Rules)
Codeforces Beta Round 44 (Div. 2)
School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round 45 (ACM-ICPC Rules)
Codeforces Beta Round 46 (Div. 2)
Codeforces Beta Round 47
Codeforces Beta Round 48
Codeforces Testing Round 1
Codeforces Beta Round 49 (Div. 2)
Codeforces Beta Round 50
Codeforces Beta Round 51
Codeforces Beta Round 52 (Div. 2)
Codeforces Beta Round 53
Codeforces Beta Round 54 (Div. 2)
Codeforces Beta Round 55 (Div. 2)
Codeforces Beta Round 56
Codeforces Beta Round 57 (Div. 2)
Codeforces Beta Round 58
Codeforces Beta Round 59 (Div. 2)
Unknown Language Round 1
Codeforces Beta Round 60
Codeforces Beta Round 61 (Div. 2)
Manthan 2011
Codeforces Beta Round 62
Codeforces Beta Round 63 (Div. 2)
Codeforces Beta Round 64
Codeforces Beta Round 65 (Div. 2)
Unknown Language Round 2
Codeforces Beta Round 66
Codeforces Beta Round 68
Codeforces Beta Round 67 (Div. 2)
All-Ukrainian School Olympiad in Informatics
Codeforces Beta Round 69 (Div. 1 Only)
Codeforces Beta Round 70 (Div. 2)
Codeforces Beta Round 71
Codeforces Beta Round 69 (Div. 2 Only)
Yandex.Algorithm Open 2011: Qualification 1
Yandex.Algorithm 2011: Qualification 2
Codeforces Beta Round 72 (Div. 1 Only)
Codeforces Beta Round 72 (Div. 2 Only)
Yandex.Algorithm 2011: Round 1
Yandex.Algorithm 2011: Round 2
Codeforces Beta Round 73 (Div. 1 Only)
Codeforces Beta Round 73 (Div. 2 Only)
Codeforces Beta Round 74 (Div. 1 Only)
Codeforces Beta Round 74 (Div. 2 Only)
Codeforces Beta Round 75 (Div. 1 Only)
Codeforces Beta Round 75 (Div. 2 Only)
Codeforces Beta Round 76 (Div. 1 Only)
Codeforces Beta Round 76 (Div. 2 Only)
Codeforces Beta Round 77 (Div. 1 Only)
Codeforces Beta Round 77 (Div. 2 Only)
Yandex.Algorithm 2011: Finals
Codeforces Beta Round 78 (Div. 1 Only)
Codeforces Beta Round 78 (Div. 2 Only)
Unknown Language Round 3
Codeforces Beta Round 79 (Div. 1 Only)
Codeforces Beta Round 79 (Div. 2 Only)
Codeforces Beta Round 80 (Div. 1 Only)
Codeforces Beta Round 80 (Div. 2 Only)
Codeforces Beta Round 81
Codeforces Beta Round 82 (Div. 2)
Codeforces Beta Round 83 (Div. 1 Only)
Codeforces Beta Round 83 (Div. 2 Only)
Codeforces Beta Round 84 (Div. 1 Only)
Codeforces Beta Round 84 (Div. 2 Only)
Codeforces Beta Round 85 (Div. 1 Only)
Codeforces Beta Round 85 (Div. 2 Only)
Codeforces Beta Round 86 (Div. 1 Only)
Codeforces Beta Round 86 (Div. 2 Only)
Codeforces Beta Round 87 (Div. 1 Only)
Codeforces Beta Round 87 (Div. 2 Only)
Codeforces Beta Round 88
Codeforces Beta Round 89 (Div. 2)
Codeforces Beta Round 90
School Regional Team Contest, Saratov, 2011
Codeforces Beta Round 91 (Div. 1 Only)
Codeforces Beta Round 91 (Div. 2 Only)
Codeforces Beta Round 92 (Div. 1 Only)
Codeforces Beta Round 92 (Div. 2 Only)
Codeforces Testing Round 2
Codeforces Beta Round 93 (Div. 1 Only)
Codeforces Beta Round 93 (Div. 2 Only)
Codeforces Beta Round 94 (Div. 1 Only)
Codeforces Beta Round 94 (Div. 2 Only)
Unknown Language Round 4
Codeforces Beta Round 95 (Div. 2)
Codeforces Beta Round 96 (Div. 1)
Codeforces Beta Round 96 (Div. 2)
Codeforces Testing Round 3
Codeforces Beta Round 97 (Div. 1)
Codeforces Beta Round 97 (Div. 2)
Codeforces Beta Round 98 (Div. 2)
Codeforces Beta Round 99 (Div. 1)
Codeforces Beta Round 99 (Div. 2)
Codeforces Round 100
Codeforces Round 101 (Div. 2)
Codeforces Round 102 (Div. 1)
Codeforces Round 102 (Div. 2)
Codeforces Round 103 (Div. 2)
Codeforces Round 104 (Div. 1)
Codeforces Round 104 (Div. 2)
Codeforces Testing Round 4
Codeforces Round 105 (Div. 2)
Codeforces Round 106 (Div. 2)
Codeforces Round 107 (Div. 1)
Codeforces Round 107 (Div. 2)
Codeforces Round 108 (Div. 2)
Surprise Language Round 5
Codeforces Round 109 (Div. 1)
Codeforces Round 109 (Div. 2)
Codeforces Round 110 (Div. 2)
VK Cup 2012 Qualification Round 1
VK Cup 2012 Qualification Round 2
Codeforces Round 111 (Div. 2)
VK Cup 2012 Round 1
VK Cup 2012 Wild-card Round 1
VK Cup 2012 Round 2
VK Cup 2012 Round 3
Codeforces Round 112 (Div. 2)
Codeforces Round 113 (Div. 2)
Codeforces Round 114 (Div. 1)
Codeforces Round 114 (Div. 2)
VK Cup 2012 Round 2 (Unofficial Div. 2 Edition)
April Fools Day Contest
Croc Champ 2012 - Qualification Round
Croc Champ 2012 - Round 1
VK Cup 2012 Round 3 (Unofficial Div. 2 Edition)
Codeforces Round 115
Croc Champ 2012 - Round 2
ABBYY Cup 2.0 - Easy
ABBYY Cup 2.0 - Hard
Codeforces Round 116 (Div. 2, ACM-ICPC Rules)
Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition)
Codeforces Round 117 (Div. 2)
Croc Champ 2012 - Final
Codeforces Round 118 (Div. 1)
Codeforces Round 118 (Div. 2)
Codeforces Round 119 (Div. 1)
Surprise Language Round 6
Codeforces Round 119 (Div. 2)
Codeforces Round 120 (Div. 2)
Codeforces Round 121 (Div. 1)
Codeforces Round 121 (Div. 2)
Codeforces Round 122 (Div. 1)
Codeforces Round 122 (Div. 2)
Codeforces Round 123 (Div. 2)
Codeforces Round 124 (Div. 1)
Codeforces Round 124 (Div. 2)
Codeforces Round 125 (Div. 1)
Codeforces Round 125 (Div. 2)
Codeforces Round 126 (Div. 2)
Codeforces Round 127 (Div. 1)
Codeforces Round 127 (Div. 2)
Codeforces Round 128 (Div. 2)
Codeforces Round 129 (Div. 1)
Codeforces Round 129 (Div. 2)
Abbyy Cup 2.0 - Final (unofficial)
Codeforces Round 130 (Div. 2)
VK Cup 2012 Finals, Practice Session
VK Cup 2012 Finals (unofficial online-version)
Codeforces Round 131 (Div. 1)
Codeforces Round 131 (Div. 2)
Codeforces Round 132 (Div. 2)
Codeforces Round 133 (Div. 2)
Codeforces Round 134 (Div. 1)
Codeforces Round 134 (Div. 2)
Codeforces Round 135 (Div. 2)
Codeforces Round 136 (Div. 1)
Codeforces Round 136 (Div. 2)
Codeforces Round 137 (Div. 2)
Codeforces Round 138 (Div. 1)
Codeforces Round 138 (Div. 2)
Codeforces Round 139 (Div. 2)
Codeforces Round 140 (Div. 1)
Codeforces Round 140 (Div. 2)
Codeforces Round 141 (Div. 2)
Codeforces Round 142 (Div. 1)
Codeforces Round 142 (Div. 2)
Codeforces Round 143 (Div. 2)
Codeforces Round 144 (Div. 1)
Codeforces Round 144 (Div. 2)
Codeforces Round 145 (Div. 2, ACM-ICPC Rules)
Codeforces Round 146 (Div. 1)
Codeforces Round 146 (Div. 2)
Codeforces Round 147 (Div. 2)
Codeforces Round 148 (Div. 1)
Codeforces Round 148 (Div. 2)
Codeforces Round 145 (Div. 1, ACM-ICPC Rules)
Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements)
Codeforces Round 149 (Div. 2)
Codeforces Round 150 (Div. 1)
Codeforces Round 150 (Div. 2)
CROC-MBTU 2012, Elimination Round (ACM-ICPC)
Codeforces Round 151 (Div. 2)
Codeforces Round 152 (Div. 2)
Codeforces Round 152 (Div. 1)
CROC-MBTU 2012, Final Round (Online version, Div. 2)
Codeforces Round 153 (Div. 1)
Codeforces Round 153 (Div. 2)
Codeforces Round 154 (Div. 2)
Codeforces Round 155 (Div. 2)
Codeforces Round 156 (Div. 2)
Codeforces Round 156 (Div. 1)
Codeforces Round 159 (Div. 2)
Codeforces Round 157 (Div. 1)
Codeforces Round 157 (Div. 2)
Codeforces Round 158 (Div. 2)
Codeforces Round 160 (Div. 1)
Codeforces Round 160 (Div. 2)
Codeforces Round 161 (Div. 2)
Codeforces Round 162 (Div. 1)
Codeforces Round 162 (Div. 2)
Codeforces Round 163 (Div. 2)
Codeforces Testing Round 5
Codeforces Round 164 (Div. 2)
Codeforces Round 165 (Div. 1)
Codeforces Round 165 (Div. 2)
Codeforces Round 166 (Div. 2)
Codeforces Round 167 (Div. 2)
Codeforces Round 167 (Div. 1)
Codeforces Round 168 (Div. 1)
Codeforces Round 169 (Div. 2)
Codeforces Round 170 (Div. 1)
Codeforces Round 171 (Div. 2)
Codeforces Round 172 (Div. 1)
Codeforces Round 172 (Div. 2)
Codeforces Round 173 (Div. 2)
Codeforces Round 174 (Div. 1)
Codeforces Round 175 (Div. 2)
Codeforces Round 176 (Div. 1)
Codeforces Round 177 (Div. 1)
Codeforces Round 177 (Div. 2)
April Fools Day Contest 2013
Croc Champ 2013 - Qualification Round
Croc Champ 2013 - Round 1
Croc Champ 2013 - Round 2
Codeforces Round 178 (Div. 2)
Codeforces Round 179 (Div. 1)
Codeforces Round 179 (Div. 2)
Codeforces Round 180 (Div. 1)
Codeforces Round 181 (Div. 2)
Codeforces Round 182 (Div. 1)
Codeforces Round 182 (Div. 2)
Codeforces Round 183 (Div. 1)
Codeforces Round 183 (Div. 2)
Codeforces Round 184 (Div. 2)
Testing Round 6
Croc Champ 2013 - Finals (online version, Div. 1)
Codeforces Round 185 (Div. 1)
Codeforces Round 185 (Div. 2)
Codeforces Round 186 (Div. 2)
Codeforces Round 187 (Div. 1)
Codeforces Round 187 (Div. 2)
ABBYY Cup 3.0
Codeforces Round 188 (Div. 1)
Codeforces Round 189 (Div. 1)
Codeforces Round 189 (Div. 2)
Codeforces Round 190 (Div. 1)
Codeforces Round 190 (Div. 2)
Testing Round 7
MemSQL start[c]up Round 1
Codeforces Round 191 (Div. 2)
Testing Round 8
Codeforces Round 192 (Div. 1)
Codeforces Round 192 (Div. 2)
ABBYY Cup 3.0 - Finals (online version)
Codeforces Round 193 (Div. 2)
Codeforces Round 194 (Div. 1)
MemSQL start[c]up Round 2 - online version
Codeforces Round 195 (Div. 2)
Codeforces Round 196 (Div. 1)
Codeforces Round 197 (Div. 2)
Codeforces Round 198 (Div. 2)
Codeforces Round 198 (Div. 1)
Codeforces Round 199 (Div. 2)
Codeforces Round 200 (Div. 1)
Friday the 13th, Programmers Day
Codeforces Round 201 (Div. 1)
Codeforces Round 201 (Div. 2)
Codeforces Round 202 (Div. 1)
Codeforces Round 202 (Div. 2)
Codeforces Round 203 (Div. 2)
Codeforces Round 204 (Div. 1)
Codeforces Round 204 (Div. 2)
Codeforces Round 205 (Div. 2)
Codeforces Round 206 (Div. 1)
Codeforces Round 235 (Div. 2)
Codeforces Round 236 (Div. 2)
Codeforces Round 236 (Div. 1)
Codeforces Round 237 (Div. 2)
Codeforces Round 238 (Div. 2)
Codeforces Round 238 (Div. 1)
Codeforces Round 239 (Div. 1)
April Fools Day Contest 2014
Coder-Strike 2014 - Qualification Round
Coder-Strike 2014 - Round 1
Coder-Strike 2014 - Round 2
Codeforces Round 240 (Div. 1)
Codeforces Round 240 (Div. 2)
Codeforces Round 241 (Div. 2)
RCC 2014 Warmup (Div. 2)
RCC 2014 Warmup (Div. 1)
Coder-Strike 2014 - Finals (online edition, Div. 1)
Coder-Strike 2014 - Finals (online edition, Div. 2)
Codeforces Round 242 (Div. 2)
Codeforces Round 243 (Div. 1)
Codeforces Round 243 (Div. 2)
Codeforces Round 244 (Div. 2)
Codeforces Round 245 (Div. 1)
Codeforces Round 245 (Div. 2)
Codeforces Round 247 (Div. 2)
Codeforces Round 246 (Div. 2)
Codeforces Round 248 (Div. 2)
Codeforces Round 249 (Div. 2)
Zepto Code Rush 2014
Codeforces Round 250 (Div. 2)
Codeforces Round 251 (Div. 2)
Testing Round 10
Codeforces Round 252 (Div. 2)
Codeforces Round 253 (Div. 1)
Codeforces Round 253 (Div. 2)
Codeforces Round 254 (Div. 1)
Codeforces Round 254 (Div. 2)
Codeforces Round #FF (Div. 1)
Codeforces Round #FF (Div. 2)
Codeforces Round 256 (Div. 2)
Codeforces Round 257 (Div. 1)
Codeforces Round 257 (Div. 2)
Codeforces Round 258 (Div. 2)
MemSQL Start[c]UP 2.0 - Round 1
Codeforces Round 259 (Div. 1)
Codeforces Round 259 (Div. 2)
Codeforces Round 260 (Div. 1)
Codeforces Round 260 (Div. 2)
MemSQL Start[c]UP 2.0 - Round 2
Codeforces Round 261 (Div. 2)
Codeforces Round 262 (Div. 2)
Codeforces Round 263 (Div. 1)
Codeforces Round 263 (Div. 2)
Codeforces Round 264 (Div. 2)
Codeforces Round 265 (Div. 1)
Codeforces Round 265 (Div. 2)
Codeforces Round 266 (Div. 2)
Codeforces Round 267 (Div. 2)
Codeforces Round 268 (Div. 1)
Codeforces Round 268 (Div. 2)
Surprise Language Round 7
Codeforces Round 269 (Div. 2)
Codeforces Round 270
Codeforces Round 271 (Div. 2)
Bayan 2015 Contest Warm Up
Codeforces Round 272 (Div. 2)
Codeforces Round 272 (Div. 1)
Codeforces Round 273 (Div. 2)
Codeforces Round 274 (Div. 2)
Codeforces Round 274 (Div. 1)
Codeforces Round 275 (Div. 1)
Codeforces Round 275 (Div. 2)
Codeforces Round 276 (Div. 1)
Codeforces Round 276 (Div. 2)
Codeforces Round 277 (Div. 2)
Codeforces Round 278 (Div. 1)
Codeforces Round 278 (Div. 2)
Codeforces Round 277.5 (Div. 2)
Codeforces Round 279 (Div. 2)
Testing Round 11
Codeforces Round 280 (Div. 2)
Codeforces Round 281 (Div. 2)
Codeforces Round 282 (Div. 1)
Codeforces Round 282 (Div. 2)
Codeforces Global Round 23
Codeforces Round 832 (Div. 2)
Codeforces Round 833 (Div. 2)
Educational Codeforces Round 138 (Rated for Div. 2)
CodeTON Round 3 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 829 (Div. 1)
Codeforces Round 829 (Div. 2)
Codeforces Round 836 (Div. 2)
Codeforces Round 834 (Div. 3)
Codeforces Round 835 (Div. 4)
Pinely Round 1 (Div. 1 + Div. 2)
Codeforces Round 838 (Div. 2)
Codeforces Round 840 (Div. 2) and Enigma 2022 - Cybros LNMIIT
Codeforces Global Round 24
2022-2023 ICPC, NERC, Southern and Volga Russian Regional Contest (Online Mirror, ICPC Rules, Preferably Teams)
Educational Codeforces Round 139 (Rated for Div. 2)
Educational Codeforces Round 140 (Rated for Div. 2)
Codeforces Round 842 (Div. 2)
VK Cup 2022 - Квалификация (Engine)
Good Bye 2022: 2023 is NEAR
Codeforces Round 837 (Div. 2)
Codeforces Round 839 (Div. 3)
2022-2023 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Polynomial Round 2022 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 843 (Div. 2)
SWERC 2022-2023 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
Codeforces Round 845 (Div. 2) and ByteRace 2023
Codeforces Round 848 (Div. 2)
Hello 2023
Codeforces Round 846 (Div. 2)
VK Cup 2022 - Отборочный раунд (Engine)
Educational Codeforces Round 141 (Rated for Div. 2)
VK Cup 2022 - Финальный раунд (Engine)
Codeforces Round 850 (Div. 2, based on VK Cup 2022 - Final Round)
TypeDB Forces 2023 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 851 (Div. 2)
Codeforces Round 853 (Div. 2)
Codeforces Round 847 (Div. 3)
Codeforces Round 849 (Div. 4)
Educational Codeforces Round 142 (Rated for Div. 2)
Codeforces Round 852 (Div. 2)
Codeforces Round 856 (Div. 2)
Educational Codeforces Round 143 (Rated for Div. 2)
Educational Codeforces Round 144 (Rated for Div. 2)
Codeforces Round 864 (Div. 2)
Codeforces Round 860 (Div. 2)
Codeforces Round 854 by cybercats (Div. 1 + Div. 2)
Codeforces Round 855 (Div. 3)
Codeforces Round 857 (Div. 1)
Codeforces Round 857 (Div. 2)
Nebius Welcome Round (Div. 1 + Div. 2)
Codeforces Round 862 (Div. 2)
Codeforces Round 858 (Div. 2)
Codeforces Round 859 (Div. 4)
Codeforces Round 861 (Div. 2)
Educational Codeforces Round 145 (Rated for Div. 2)
CodeTON Round 4 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 863 (Div. 3)
April Fools Day Contest 2023
Educational Codeforces Round 146 (Rated for Div. 2)
Codeforces Round 865 (Div. 1)
Codeforces Round 865 (Div. 2)
Codeforces Round 869 (Div. 1)
Codeforces Round 869 (Div. 2)
Codeforces Round 866 (Div. 1)
Codeforces Round 866 (Div. 2)
Educational Codeforces Round 147 (Rated for Div. 2)
Codeforces Round 867 (Div. 3)
Codeforces Round 868 (Div. 2)
Codeforces Round 872 (Div. 1)
Codeforces Round 872 (Div. 2)
Codeforces Round 870 (Div. 2)
Codeforces Round 873 (Div. 1)
Codeforces Round 873 (Div. 2)
Codeforces Round 871 (Div. 4)
Codeforces Round 875 (Div. 1)
Codeforces Round 875 (Div. 2)
Educational Codeforces Round 148 (Rated for Div. 2)
Codeforces Round 874 (Div. 3)
Codeforces Round 879 (Div. 2)
Codeforces Round 880 (Div. 1)
Codeforces Round 880 (Div. 2)
Educational Codeforces Round 149 (Rated for Div. 2)
Codeforces Round 877 (Div. 2)
Codeforces Round 876 (Div. 2)
Codeforces Round 878 (Div. 3)
Educational Codeforces Round 150 (Rated for Div. 2)
CodeTON Round 5 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 881 (Div. 3)
Codeforces Round 884 (Div. 1 + Div. 2)
Educational Codeforces Round 151 (Rated for Div. 2)
Codeforces Round 883 (Div. 3)
Codeforces Round 882 (Div. 2)
Codeforces Round 885 (Div. 2)
Educational Codeforces Round 152 (Rated for Div. 2)
Codeforces Round 886 (Div. 4)
Codeforces Round 888 (Div. 3)
Codeforces Round 887 (Div. 1)
Codeforces Round 887 (Div. 2)
Codeforces Round 889 (Div. 1)
Codeforces Round 889 (Div. 2)
Codeforces Round 890 (Div. 2) supported by Constructor Institute
Codeforces Round 891 (Div. 3)
Codeforces Round 893 (Div. 2)
Codeforces Round 892 (Div. 2)
Educational Codeforces Round 153 (Rated for Div. 2)
Educational Codeforces Round 154 (Rated for Div. 2)
Codeforces Round 894 (Div. 3)
Pinely Round 2 (Div. 1 + Div. 2)
Harbour.Space Scholarship Contest 2023-2024 (Div. 1 + Div. 2)
COMPFEST 15 - Preliminary Online Mirror (Unrated, ICPC Rules, Teams Preferred)
Codeforces Round 897 (Div. 2)
Codeforces Round 896 (Div. 1)
Codeforces Round 896 (Div. 2)
CodeTON Round 6 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 895 (Div. 3)
Codeforces Round 898 (Div. 4)
Codeforces Round 901 (Div. 1)
Codeforces Round 901 (Div. 2)
Codeforces Round 902 (Div. 1, based on COMPFEST 15 - Final Round)
Codeforces Round 902 (Div. 2, based on COMPFEST 15 - Final Round)
Codeforces Round 900 (Div. 3)
Educational Codeforces Round 155 (Rated for Div. 2)
Codeforces Round 903 (Div. 3)
Codeforces Round 899 (Div. 2)
Codeforces Round 905 (Div. 3)
Codeforces Round 904 (Div. 2)
ICPC 2023 Online Challenge powered by Huawei
Educational Codeforces Round 156 (Rated for Div. 2)
Codeforces Round 905 (Div. 1)
Codeforces Round 906 (Div. 1)
Codeforces Round 906 (Div. 2)
Codeforces Round 907 (Div. 2)
Codeforces Round 908 (Div. 1)
Codeforces Round 908 (Div. 2)
Educational Codeforces Round 157 (Rated for Div. 2)
CodeTON Round 7 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 910 (Div. 2)
Codeforces Round 909 (Div. 3)
Codeforces Round 911 (Div. 2)
Educational Codeforces Round 158 (Rated for Div. 2)
Educational Codeforces Round 159 (Rated for Div. 2)
Codeforces Round 912 (Div. 2)
Codeforces Round 914 (Div. 2)
Codeforces Round 915 (Div. 2)
2023-2024 ICPC, Asia Jakarta Regional Contest (Online Mirror, Unrated, ICPC Rules, Teams Preferred)
Codeforces Round 913 (Div. 3)
Pinely Round 3 (Div. 1 + Div. 2)
Kotlin Heroes: Episode 9 (Unrated, T-Shirts + Prizes!)
2023-2024 ICPC, NERC, Northern Eurasia Onsite (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Educational Codeforces Round 160 (Rated for Div. 2)
Codeforces Round 916 (Div. 3)
Codeforces Round 918 (Div. 4)
Good Bye 2023
Codeforces Round 917 (Div. 2)
Codeforces Round 922 (Div. 2)
Hello 2024
Codeforces Round 919 (Div. 2)
Codeforces Round 920 (Div. 3)
Educational Codeforces Round 161 (Rated for Div. 2)
Educational Codeforces Round 162 (Rated for Div. 2)
Codeforces Round 921 (Div. 1)
Codeforces Round 921 (Div. 2)
Codeforces Round 928 (Div. 4)
Codeforces Round 923 (Div. 3)
Codeforces Round 924 (Div. 2)
Codeforces Round 926 (Div. 2)
think-cell Round 1
Codeforces Round 925 (Div. 3)
Codeforces Round 927 (Div. 3)
Codeforces Round 929 (Div. 3)
Codeforces Round 931 (Div. 2)
Codeforces Round 932 (Div. 2)
Codeforces Round 930 (Div. 1)
Codeforces Round 930 (Div. 2)
2024 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
XVIII Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules)
XVIII Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules)
Codeforces Round 933 (Div. 3)
CodeTON Round 8 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 934 (Div. 1)
Codeforces Round 934 (Div. 2)
Codeforces Round 935 (Div. 3)
Codeforces Round 936 (Div. 2)
Educational Codeforces Round 163 (Rated for Div. 2)
European Championship 2024 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
Codeforces Round 937 (Div. 4)
Codeforces Global Round 25
April Fools Day Contest 2024
2023 Post World Finals Online ICPC Challenge powered by Huawei
Educational Codeforces Round 164 (Rated for Div. 2)
Codeforces Round 938 (Div. 3)
Codeforces Round 939 (Div. 2)
Codeforces Round 940 (Div. 2) and CodeCraft-23
Kotlin Heroes: Episode 10
Codeforces Round 941 (Div. 1)
Codeforces Round 941 (Div. 2)
Codeforces Round 942 (Div. 1)
Codeforces Round 943 (Div. 3)
Educational Codeforces Round 165 (Rated for Div. 2)
Helvetic Coding Contest 2024 online mirror (teams allowed, unrated)
Codeforces Round 944 (Div. 4)
Codeforces Round 942 (Div. 2)
Codeforces Round 945 (Div. 2)
Codeforces Round 946 (Div. 3)
Codeforces Round 947 (Div. 1 + Div. 2)
Educational Codeforces Round 166 (Rated for Div. 2)
Codeforces Round 948 (Div. 2)
Codeforces Round 953 (Div. 2)
Codeforces Round 951 (Div. 2)
Codeforces Round 950 (Div. 3)
Codeforces Round 949 (Div. 2)
Codeforces Round 955 (Div. 2, with prizes from NEAR!)
Codeforces Round 956 (Div. 2) and ByteRace 2024
Codeforces Global Round 26
Codeforces Round 952 (Div. 4)
Codeforces Round 954 (Div. 3)
EPIC Institute of Technology Round Summer 2024 (Div. 1 + Div. 2)
Codeforces Round 958 (Div. 2)
Educational Codeforces Round 167 (Rated for Div. 2)
Codeforces Round 960 (Div. 2)
Pinely Round 4 (Div. 1 + Div. 2)
Codeforces Round 957 (Div. 3)
Codeforces Round 963 (Div. 2)
Codeforces Round 959 sponsored by NEAR (Div. 1 + Div. 2)
Codeforces Round 961 (Div. 2)
Codeforces Round 962 (Div. 3)
Educational Codeforces Round 168 (Rated for Div. 2)
Codeforces Round 965 (Div. 2)
Codeforces Round 964 (Div. 4)
Codeforces Round 966 (Div. 3)
Codeforces Round 967 (Div. 2)
EPIC Institute of Technology Round August 2024 (Div. 1 + Div. 2)
Codeforces Round 968 (Div. 2)
Educational Codeforces Round 169 (Rated for Div. 2)
Codeforces Round 972 (Div. 2)
Codeforces Round 969 (Div. 1)
Codeforces Round 969 (Div. 2)
Codeforces Round 970 (Div. 3)
Codeforces Round 971 (Div. 4)
Testing Round 19 (Div. 3)
Kotlin Heroes: Episode 11
Codeforces Round 973 (Div. 2)
Codeforces Round 974 (Div. 3)
Codeforces Round 975 (Div. 1)
Codeforces Round 975 (Div. 2)
Codeforces Round 976 (Div. 2) and Divide By Zero 9.0
Codeforces Round 977 (Div. 2, based on COMPFEST 16 - Final Round)
Codeforces Round 978 (Div. 2)
Codeforces Round 980 (Div. 1)
Codeforces Round 980 (Div. 2)
Educational Codeforces Round 170 (Rated for Div. 2)
Educational Codeforces Round 171 (Rated for Div. 2)
Codeforces Round 982 (Div. 2)
Codeforces Round 986 (Div. 2)
Refact.ai Match 1 (Codeforces Round 985)
Codeforces Round 979 (Div. 2)
Codeforces Round 987 (Div. 2)
Codeforces Round 983 (Div. 2)
Codeforces Round 981 (Div. 3)
Rayan Programming Contest 2024 - Selection (Codeforces Round 989, Div. 1 + Div. 2)
Codeforces Global Round 27
Codeforces Round 984 (Div. 3)
Codeforces Round 988 (Div. 3)
2024-2025 ICPC, NERC, Southern and Volga Russian Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
CodeTON Round 9 (Div. 1 + Div. 2, Rated, Prizes!)
Codeforces Round 992 (Div. 2)
2024 ICPC Asia Taichung Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
Educational Codeforces Round 172 (Rated for Div. 2)
Educational Codeforces Round 173 (Rated for Div. 2)
Codeforces Round 993 (Div. 4)
2024-2025 ICPC Asia Jakarta Regional Contest (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Codeforces Round 990 (Div. 1)
Codeforces Round 990 (Div. 2)
Codeforces Global Round 28
Codeforces Round 994 (Div. 2)
Codeforces Round 991 (Div. 3)
Codeforces Round 995 (Div. 3)
2024-2025 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Good Bye 2024: 2025 is NEAR
Codeforces Round 996 (Div. 2)
Codeforces Round 997 (Div. 2)
Hello 2025
Codeforces Round 1002 (Div. 2)
Codeforces Round 998 (Div. 3)
IAEPC Preliminary Contest (Codeforces Round 999, Div. 1 + Div. 2)
Ethflow Round 1 (Codeforces Round 1001, Div. 1 + Div. 2)
Codeforces Round 1000 (Div. 2)
Codeforces Round 1005 (Div. 2)
Codeforces Round 1003 (Div. 4)
Codeforces Round 1004 (Div. 1)
Codeforces Round 1004 (Div. 2)
European Championship 2025 - Online Mirror (Unrated, ICPC Rules, Teams Preferred)
Educational Codeforces Round 174 (Rated for Div. 2)
Educational Codeforces Round 175 (Rated for Div. 2)
Codeforces Round 1007 (Div. 2)
Codeforces Round 1006 (Div. 3)
2025 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Codeforces Round 1009 (Div. 3)
Educational Codeforces Round 176 (Rated for Div. 2)
Codeforces Round 1008 (Div. 1)
Codeforces Round 1008 (Div. 2)
XIX Open Olympiad in Informatics - Final Stage, Day 1 (Unrated, Online Mirror, IOI rules)
XIX Open Olympiad in Informatics - Final Stage, Day 2 (Unrated, Online Mirror, IOI rules)
Codeforces Round 1010 (Div. 1, Unrated)
Codeforces Round 1010 (Div. 2, Unrated)
Teza Round 1 (Codeforces Round 1015, Div. 1 + Div. 2)
Codeforces Round 1011 (Div. 2)
Educational Codeforces Round 177 (Rated for Div. 2)
Kotlin Heroes: Episode 12
Codeforces Round 1012 (Div. 1)
Codeforces Round 1012 (Div. 2)
Codeforces Round 1013 (Div. 3)
Codeforces Round 1014 (Div. 2)
Codeforces Round 1016 (Div. 3)
Codeforces Round 1017 (Div. 4)
April Fools Day Contest 2025
Neowise Labs Contest 1 (Codeforces Round 1018, Div. 1 + Div. 2)
Codeforces Round 1021 (Div. 1)
Codeforces Round 1021 (Div. 2)
Codeforces Round 1024 (Div. 1)
Codeforces Round 1024 (Div. 2)
Codeforces Round 1019 (Div. 2)
Educational Codeforces Round 178 (Rated for Div. 2)
Codeforces Round 1020 (Div. 3)
Codeforces Round 1023 (Div. 2)
Codeforces Round 1022 (Div. 2)
Codeforces Round 1025 (Div. 2)
Codeforces Round 1026 (Div. 2)
Educational Codeforces Round 179 (Rated for Div. 2)
Educational Codeforces Round 180 (Rated for Div. 2)
Codeforces Round 1031 (Div. 2)
Codeforces Round 1027 (Div. 3)
Codeforces Round 1028 (Div. 1)
Codeforces Round 1028 (Div. 2)
Codeforces Round 1029 (Div. 3)
Codeforces Round 1030 (Div. 2)
Codeforces Round 1035 (Div. 2)
Codeforces Round 1033 (Div. 2) and CodeNite 2025
Codeforces Round 1032 (Div. 3)
Order Capital Round 1 (Codeforces Round 1038, Div. 1 + Div. 2)
Codeforces Round 1034 (Div. 3)
EPIC Institute of Technology Round Summer 2025 (Codeforces Round 1036, Div. 1 + Div. 2)
Educational Codeforces Round 181 (Rated for Div. 2)
Codeforces Round 1037 (Div. 3)
Atto Round 1 (Codeforces Round 1041, Div. 1 + Div. 2)
Codeforces Round 1039 (Div. 2)
Codeforces Round 1040 (Div. 1)
Codeforces Round 1040 (Div. 2)
Codeforces Round 1042 (Div. 3)
Codeforces Round 1043 (Div. 3)
Codeforces Round 1044 (Div. 2)
Codeforces Round 1045 (Div. 2)
Codeforces Round 1046 (Div. 1)
Codeforces Round 1046 (Div. 2)
Codeforces Round 1047 (Div. 3)
Codeforces Round 1048 (Div. 1)
Codeforces Round 1048 (Div. 2)
Codeforces Round 1049 (Div. 2)
Kotlin Heroes: Episode 13
Codeforces Round 1051 (Div. 2)
Educational Codeforces Round 182 (Rated for Div. 2)
Educational Codeforces Round 183 (Rated for Div. 2)
Codeforces Round 1052 (Div. 2)
Codeforces Global Round 29 (Div. 1 + Div. 2)
Codeforces Round 1050 (Div. 4)
Codeforces Round 1054 (Div. 3)
Codeforces Round 1053 (Div. 1)
Codeforces Round 1053 (Div. 2)
Squarepoint Challenge (Codeforces Round 1055, Div. 1 + Div. 2)
Codeforces Round 1057 (Div. 2)
Codeforces Round 1060 (Div. 2)
Codeforces Round 1056 (Div. 2)
Codeforces Round 1061 (Div. 2)
Codeforces Round 1066 (Div. 1 + Div. 2)
Codeforces Round 1067 (Div. 2)
Codeforces Round 1058 (Div. 1)
Codeforces Round 1058 (Div. 2)
Pinely Round 5 (Div. 1 + Div. 2)
Codeforces Round 1059 (Div. 3)
Codeforces Round 1063 (Div. 2)
Codeforces Global Round 30 (Div. 1 + Div. 2)
Codeforces Round 1064 (Div. 1)
Codeforces Round 1064 (Div. 2)
Codeforces Round 1062 (Div. 4)
Testing Round 20 (Unrated, Communication Problems)
Educational Codeforces Round 184 (Rated for Div. 2)
Educational Codeforces Round 185 (Rated for Div. 2)
Codeforces Round 1065 (Div. 3)
2025 ICPC Asia Taichung Regional Contest (Unrated, Online Mirror, ICPC Rules, Preferably Teams)
Codeforces Round 1068 (Div. 2)
Codeforces Round 1069 (Div. 1)
Codeforces Round 1069 (Div. 2)
Codeforces Round 1070 (Div. 2)
Good Bye 2025
Codeforces Round 1071 (Div. 3)
Codeforces Global Round 31 (Div. 1 + Div. 2)
2025-2026 ICPC, NERC, Northern Eurasia Finals (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Educational Codeforces Round 186 (Rated for Div. 2)
Hello 2026
Codeforces Round 1072 (Div. 3)
Codeforces Round 1074 (Div. 4)
Codeforces Round 1077 (Div. 1)
Codeforces Round 1077 (Div. 2)
Codeforces Round 1075 (Div. 2)
Codeforces Round 1073 (Div. 1)
Codeforces Round 1073 (Div. 2)
Codeforces Round 1081 (Div. 2)
Codeforces Round 1076 (Div. 3)
Codeforces Round 1078 (Div. 2)
Codeforces Round 1080 (Div. 3)
Codeforces Round 1079 (Div. 1)
Codeforces Round 1079 (Div. 2)
Kotlin Heroes: Episode 14
Codeforces Round 1084 (Div. 3)
Codeforces Round 1082 (Div. 1)
Codeforces Round 1082 (Div. 2)
Educational Codeforces Round 187 (Rated for Div. 2)
Educational Codeforces Round 188 (Rated for Div. 2)
Codeforces Round 1083 (Div. 2)
2026 ICPC Asia Pacific Championship - Online Mirror (Unrated, Online Mirror, ICPC Rules, Teams Preferred)
Codeforces Round 1085 (Div. 1 + Div. 2)
Codeforces Round 1086 (Div. 2)
Codeforces Round 1087 (Div. 2)
Codeforces Round 1089 (Div. 2)
Nebius Round 2 (Codeforces Round 1088, Div. 1 + Div. 2)
April Fools Day Contest 2026
Codeforces Round 1092 (Unrated, Div. 1, Based on THUPC 2026 — Finals)
Codeforces Round 1092 (Unrated, Div. 2, Based on THUPC 2026 — Finals)
Codeforces Round 1091 (Div. 2) and CodeCraft 26
Codeforces Round 1090 (Div. 4)
Codeforces Round 1093 (Div. 1)
Codeforces Round 1093 (Div. 2)
Spectral::Cup 2026 Round 1 (Codeforces Round 1094, Div. 1 + Div. 2)
Educational Codeforces Round 189 (Rated for Div. 2)
Codeforces Round 1095 (Div. 2)
Codeforces Round 1096 (Div. 3)

Practice › Codeforces Solutions › Codeforces Round 205 (Div. 2) › CF 353E - Antichain

CF 353E - Antichain

Codeforces 353E: Antichain

codeforces competitive-programming dp graph-matchings greedy

CF 353E - Antichain

Rating: 2200
Tags: dp, graph matchings, greedy
Solve time: 2m 38s
Verified: no

Solution

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