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线段树是做数据用的吧？我想到一个用bst的，不过数据bt的话好像会退化到O(n^2)

Posted by frkstyc at 2005-05-10 12:28:30 on Problem 2182
In Reply To:没做过这个题目，看了一下，感觉线段树可以做到nlgn，可能还能简化一下 Posted by:hawk at 2005-05-09 22:57:32 



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