摘要：
The only difference between easy and hard versions is the number of elements in the array. You are given an array aa consisting of nn integers. In one 阅读全文
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摘要：
The only difference between easy and hard versions is the number of elements in the array. You are given an array aa consisting of nn integers. In one 阅读全文
摘要：
题目链接：https://codeforces.com/contest/1230/problem/C 题目大意：21枚多米诺牌，给你一个图，将多米诺牌放到图的边上，由同一个点发出的所有边，边上多米诺牌对应该点的一侧相同。 such as: 题解：暴力枚举，即先给每个点一个值，然后判断在这种情况下可以 阅读全文
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