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我们学校月赛出了题N范围是10^5，再看这题，发现好水，就你说的这地方要离散化hash麻烦点

Posted by Seen at 2010-12-29 21:54:58 on Problem 1952
In Reply To:WA了半天，，原来还有个细节如下 Posted by:TangMing at 2009-07-24 20:32:21 
> 要去掉重复的序列
> 如数据
> 5
> 5 5 4 4 3
> 要输出
> 3 1
> 而不是3 4
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