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就是X是1~n,Y也是1~n,对于边(u,v),增加X[u]->Y[v]和X[v]->Y[u]

Posted by twilight at 2008-12-07 22:47:43
In Reply To:最好能证明下。。实在想不出来。。谢谢 Posted by:conan1 at 2008-12-07 22:29:33


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