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此题数据中很可能又重边，所以用邻接矩阵就wa.

Posted by qiqilrq at 2007-10-05 19:02:35 on Problem 3411
In Reply To:苍天那！用邻接表写了一下，终于过了！！！ Posted by:qiqilrq at 2007-10-05 17:35:25 
> 用二维数组写, wa 了n次了!
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