随笔分类 - 思维--杂项
摘要:传送门 题意:给定一张不保证联通的简单图,问是否存在染色方案,使得每一个连通块为三分图。 分析:不考虑其他约束,只考虑三分图每一个子集内部没有边相连的约束,先染出一张图。做法为首先对于一个连通块,先选定一个起点u,将u染成1,然后将与u直接相连的点,全部染成2,然后选择一个染成2的点为v,然后将所有
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摘要:传送门 A 2048 题意:multiset里面有许多2的幂,每次可以从multiset取出两个一样的数字,放回去两数之和,问能否出现2048. 分析:优先队列模拟操作 B knights 题意:棋子可以走日字,将n*n的棋盘用W与B填满,代表两个阵营的棋子,使得可以互相攻击的点对数量最大。 分析:
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摘要:Watchmen CodeForces - 650A Watchmen are in a danger and Doctor Manhattan together with his friend Daniel Dreiberg should warn them as soon as possible
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摘要:Cowl is good at solving math problems. One day a friend asked him such a question: You are given a cube whose edge length is N, it is cut by the plane
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摘要:Sonya and Robots time limit per test 1 second memory limit per test 256 megabytes input: standard input output: standard output Sonya and Robots time
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摘要:B. Sonya and Exhibition time limit per test 1 second memory limit per test 256 megabytes input standard input output standard output B. Sonya and Exhi
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