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

5 problems from Codeforces Beta Round 31 (Div. 2, Codeforces format) (contest 31), difficulty 1200-2400. 4/5 solutions verified against sample I/O.

5 items

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

Div. 2 | 5 problems | 4/5 verified | Difficulty 1200-2400 | 6m 52s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Worms Evolution	1200	implementation	12,649	1m 46s	✓
B	Sysadmin Bob	1500	greedy, implementation, strings	4,742	1m 11s	✓
C	Schedule	1700	implementation	2,026	58s	✓
D	Chocolate	2000	dfs-and-similar, implementation	1,228	59s	✓
E	TV Game	2400	dp	1,298	1m 58s

Practice › Codeforces Solutions › Codeforces Beta Round 31 (Div. 2, Codeforces format) ›

CF 31A - Worms Evolution

We are given an array of worm lengths. Each position represents a different worm form, and we need to find three distinct indices such that the length at one index equals the sum of the lengths at the other two indices.

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CF 31B - Sysadmin Bob

We are given a single string that represents multiple email addresses concatenated together with no separators. Each email address has the form A@B, where A and B are non-empty strings consisting of lowercase Latin letters.

Practice › Codeforces Solutions › Codeforces Beta Round 31 (Div. 2, Codeforces format) ›

CF 31C - Schedule

We are given a list of n lessons, each with a start and end time, scheduled in a single room. Two lessons overlap if one starts before another ends. The goal is to find which single lesson can be removed so that the remaining lessons have no overlaps.

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CF 31D - Chocolate

We are given a rectangular chocolate bar with integer width _W_ and height _H_. Bob breaks the chocolate multiple times along vertical or horizontal lines that go from one edge to the opposite edge of a piece.

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CF 31E - TV Game

We are given a string of 2n digits. The digits are processed strictly from left to right. At every step, either Homer or Marge takes the current leftmost digit and appends it to their own number. By the end, both players must have taken exactly n digits.