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网络流——建图很重要

Posted by gripleaf at 2011-08-18 16:07:14 on Problem 3436
刚开始的时候是以每个“产品状态”作为各个节点的,最大流是算出来了,可是没办法记录下每条流的路径,后来看了大牛的代码,发现是以“工厂”作为节点,一下子就简单了很多。

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