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我想到的方法就是O(N^4)的,不过就是系数有点大……

Posted by xreborner at 2005-09-18 14:46:15 on Problem 2520
In Reply To:我不认为想到O(N^4)或以下的算法很容易。。。。。。 Posted by:LouTianCheng at 2005-09-18 14:31:08


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