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因为i! >= 0!+1!+...+(i-1)!

Posted by qiqilrq at 2007-06-20 20:44:57 on Problem 1775
In Reply To:疑问:为什么从 9!开始 逐一 - 到 0! 其中减到 ==0 为止。 Posted by:drownever at 2007-02-14 01:08:28


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