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Re:AC了 不解 为什么是 *的总数-最大匹配数/2 呢?大牛指点

Posted by xiewill at 2010-04-08 17:31:10 on Problem 3020
In Reply To:AC了 不解 为什么是 *的总数-最大匹配数/2 呢?大牛指点 Posted by:GaryLiang at 2009-09-13 22:24:53
> AC了 不解 为什么是 *的总数-最大匹配数/2 呢?

这样构造出来的图边数为原来边数的两倍,所以最小边覆盖数也为原来数的两倍。事实上,应该是 (点数两倍 - 最大匹配数)/ 2

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