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你这很明显错了啊

Posted by sd197555 at 2016-11-01 11:16:19 on Problem 2762 and last updated at 2016-11-01 11:17:45
In Reply To:这道题大家写麻烦了！ tarjan+缩点就做完了啊~拓扑排序干嘛 0_0【329ms】 Posted by:ssdut_201392326 at 2014-08-12 16:13:54 
1
5 5
1 2
2 3
2 4
3 5
4 5

这个应该是No吧.
但是按照你的思想是Yes.

只能说题目数据不太严谨？
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