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byl太强了，学弟们太强了～全程被吊打，嘤嘤嘤～ A题 Connecting Vertices http://codeforces.com/problemset/problem/888/F 不会 B题 Local Extrema http://codeforces.com/problemset/pr 阅读全文
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After the fourth season Sherlock and Moriary have realized the whole foolishness of the battle between them and decided to continue their competitions 阅读全文
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Vasya is an administrator of a public page of organization "Mouse and keyboard" and his everyday duty is to publish news from the world of competitive 阅读全文
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During the lesson small girl Alyona works with one famous spreadsheet computer program and learns how to edit tables. Now she has a table filled with 阅读全文
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A permutation $p$ of size $n$ is an array such that every integer from $1$ to $n$ occurs exactly once in this array. Let's call a permutation an almos 阅读全文
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You are given an array a consisting of n integers, and additionally an integer m . You have to choose some sequence of indices $b_1, b_2, ..., b_k (1 阅读全文
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You are given a string s consisting of lowercase Latin letters. Character c is called k dominant iff each substring of s with length at least k contai 阅读全文