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为什么矩阵要反着来呢?没有读出是这个意思啊。状态压缩DP,刚开始以为是求一个匹配,写了个费用流,后来发现要输出所有匹配。写了个状态压缩DP。又WA了N次。

Posted by yygy at 2014-07-18 19:11:30 on Problem 2400


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