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没啥性质，暴力枚举就过了。。。

Posted by e_at_fdu at 2005-10-07 15:20:23 on Problem 2635
In Reply To:又没有高人指点下啊，时间复杂度降不下来，郁闷。是不是要利用什么质数的特性啊？ Posted by:Latex at 2005-10-07 14:00:50 



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