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Re:试试这个吧，这两组数据比较能说明不可以正向拓扑的，只能反向建图。

Posted by timeloop at 2008-09-17 21:00:34 on Problem 3687
In Reply To:试试这个吧，这两组数据比较能说明不可以正向拓扑的，只能反向建图。 Posted by:ImLazy at 2008-09-17 19:28:38 
> 2
> 
> 5 4
> 1 4
> 4 2
> 5 3
> 3 2
> 
> 5 3
> 1 4
> 4 2
> 3 5
> 
> 输出应该是：
> 1 5 3 4 2
> 1 3 4 2 5
这两组数据我都和你一样,可是WA.-__________-
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