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WA一晚上给大家铺路,connection数量计算要正确

Posted by wangyanbo96 at 2019-09-25 04:15:12 on Problem 3436
发现一个巨傻的错误,搞了老半天。

就是connection的数量计算,不能是出现新的f的时候就加一,因为有可能出现先有了这条路径之后又增广反向边抵消掉的情况。。。。。。

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