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主要是枚举的东西不对，我枚举的是所有可能得到的和

Posted by frkstyc at 2005-04-17 17:09:10 on Problem 2392
In Reply To:Re:ms我做的就是一个DP式的枚举，M=400，N=40000，超慢 Posted by:palmtenor at 2005-04-17 16:37:09 
> 这种DP最好写从前往后推的比较快~
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