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搞图论的就是强

Posted by doraemonok at 2008-01-31 19:29:35
In Reply To:结论应该是对的, 因为任意一个偶圈上, 给每个节点赋值后, 异号边一定是偶数条. Posted by:ArXoR at 2008-01-31 18:37:27


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