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Re:囧,看到这题第一反应树链剖分,然后发现只要树状数组维护dfs序列就行了……

Posted by hackerdd at 2012-03-06 09:17:29 on Problem 3321
In Reply To:囧,看到这题第一反应树链剖分,然后发现只要树状数组维护dfs序列就行了…… Posted by:xuhaoran510 at 2011-03-01 22:59:52


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