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为啥很多人用线段树?

Posted by KeyID at 2014-10-01 20:22:25 on Problem 2182
8000显然O(n^2)可以过啊,而且这只是理论上界,实际到不了,并且常数很小。感觉很多人根本没有进行数据上界分析……如果要练线段树的话实在没必要用这题练,这就像一个快排的题你用BST做一样,完全可以练,但是显然有更好的题目练习。

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