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Re:为什么我只能构造出19....但那么多人accept了

Posted by xuhongwei at 2004-07-18 13:56:13 on Problem 1700
In Reply To:为什么我只能构造出19....但那么多人accept了 Posted by:richardhuang at 2004-07-18 12:40:35
先1和2过去,2回来
再5和10过去,1回来
在1和2过去
这样就是17secends

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