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##题面 There are n members in our ACM club. Little W wants to select three persons from our club to form a new team taking part in provincial ACM contes 阅读全文
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##题目 Albert, Brad, Chuck are happy bachelors who are in love with Laura, Marcy, Nancy. They all have three choices. But in fact, they do have some pre 阅读全文
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##题面 Given a graph G(V, E), a clique is a sub-graph g(v, e), so that for all vertex pairs v1, v2 in v, there exists an edge (v1, v2) in e. Maximum cli 阅读全文
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##题面 Tokitsukaze has a sequence of length n, denoted by a. Tokitsukaze can merge two consecutive elements of a as many times as she wants. After each 阅读全文
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##题面 Problem Description There are n cities and m bidirectional roads in Byteland. These cities are labeled by 1,2,…,n, the brightness of the i-th cit 阅读全文
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##题面 You are given a graph consisting of n vertices and m edges. It is not guaranteed that the given graph is connected. Some edges are already direct 阅读全文