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好阴险.....In Reply To:Re: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:suibian at 2005-07-31 14:00:01 好阴险..... Followed by: Post your reply here: |
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