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您能稍详细一点么,解题报告没看太明白,谢谢

Posted by semonteer at 2006-03-27 21:43:57 on Problem 2776
In Reply To:分明有平方算法(n^2logn is awful) Posted by:cqf at 2006-03-27 21:39:50
> 加个HASH就OK了

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