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Re:弱弱的提供一组数据

Posted by 131121 at 2014-08-20 15:02:31 on Problem 3728
In Reply To:Re:弱弱的提供一组数据 Posted by:131121 at 2014-08-20 15:01:31
答案为什么是21,应该是31吧,5—4—3-2-6

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