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数据不是很强~

Posted by 448666317 at 2010-07-20 14:46:37 on Problem 2762
缩点+ 拓扑 。
开始计算缩点后的度时 , 算多了 ,居然也过了 ,后来更正 ,也过了。
看看这个数据 。
6 9

1 2 2 3 3 1
4 5 5 6 6 4
1 4 2 5 3 6
本应是 yes , 第一次 输出的是no , 居然也过 。

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