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快哭了。。 怎么这么骗人呢。。实在不理解N!后体积还是小于10^250。。原来是这样。。

Posted by Nat at 2008-09-06 20:25:04 on Problem 2515
In Reply To:There is a 'cube' in each level, while the length of cube on k-th level (count from the topmost) is exactly k! 原来最后一个是‘!’号,不是阶乘。 Posted by:chengmingvictor at 2005-07-31 12:14:11


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