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Re:这题知道圆台公式就OK了。一个while语句就搞定！

Posted by FearNoOne at 2008-08-08 02:00:51 on Problem 2405
In Reply To:这题知道圆台公式就OK了。一个while语句就搞定！ Posted by:redraiment at 2007-01-13 16:57:15 
能解释一下吗？我推的式子很繁琐啊
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