随笔分类 - 枚举
摘要:Christmas is coming and everyone is building a Christmas tree, and you are no exception. However you are special and you want to build a special one.
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摘要:http://poj.org/problem?id=2965 一、枚举每一个‘+’点,对该点和该点所在的同一行和同一列所有点进行操作,开关本身状态改变了7次,开关同一行、同一列的开关状态改变了4次,其他开关状态改变了2次。 然后,用一个数组存取每个操作,如果为奇数,则证明该点为必须点,否则为不必要的
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摘要:Flip Game Time Limit: 1000MS Memory Limit: 65536K Total Submissions: 38749 Accepted: 16834 Description Flip game is played on a rectangular 4x4 field
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