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此题中,每条路可以经过不超过三次。

Posted by nepepl at 2010-05-14 16:23:34 on Problem 3411 and last updated at 2010-05-14 16:24:38
每条路的上限设置为3的时候,用了200多ms,设置为2的时候,16ms。。。特别要注意当N=1的时候,要输出0,在这个情况下WA了3,4次

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