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果然是 N^2, 恩, 爽~

Posted by 00448247 at 2011-06-26 18:43:29 on Problem 1964
In Reply To:我的应该算O(N^2)吧,二维降为一维,不过这过程只需从第一行开始,不需再从第二,三行开始了,所以时间就从O(N^3)降到O(N^2)了 Posted by:windbells at 2004-11-03 14:10:47
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