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求证明!

Posted by ddoonn__cc at 2006-02-10 14:15:31 on Problem 1989
In Reply To:一个一个读进来,如果1...k都出现过,则结果肯定>1,如果再次出现1...k,则结果肯定>2 Posted by:xiaomi at 2004-11-07 02:34:10


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