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很明显能DP呀~

Posted by cloud at 2009-03-24 08:00:57 on Problem 1018
In Reply To:这题不能DP,因为不满足局部最优 Posted by:zyz at 2007-05-29 22:03:32
答案是0.333吧?
关键在于你怎么定义状态~

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