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Re:公式(new)

Posted by sanpin at 2009-11-22 18:08:01 on Problem 1701
In Reply To:Re:公式(new) Posted by:popozhu at 2009-06-04 16:24:43
> 用这个公式过了,不过不明白这个算法怎么来的,汗
推的……

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