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二分图最大匹配数=最小点覆盖数

Posted by yangzhe1991 at 2011-05-17 16:47:03 on Problem 3692
补图是二分图,求最大独立点个数,即去掉尽量少的点另所有边失效。因为二分图最大匹配数=最小点覆盖数,所以独立点个数=总数-匹配数

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