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Re:不能AC的看过来

Posted by xym_sun at 2012-12-11 20:45:20 on Problem 2135
In Reply To:Re:不能AC的看过来 Posted by:martinblack954 at 2011-04-02 15:36:46
> 
> 不是说一条路只能走一次吗~?
> 那这两对不是当作同一条路?

对啊,会不会由于正向反向都走了,就相当于一条路走了两次。我就这样建边的,但还是WA.

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