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一个疑问。

Posted by abilitytao at 2009-10-08 19:15:31 on Problem 3694
我想用随机根,结果
root-rand()%n+1;
FindKeyEdge(hash,root,n);
RE。。。。。。。
改成
FindKeyEdge(hash,rand()%n+1,n);
AC...
为什么????

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