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这题我有个疑问,请个位帮帮我!

Posted by lianzhouxiaowu at 2009-08-26 12:20:17 on Problem 1034
狗可不可以从(x i, y i)出发到了一个景点,之后又返回(x i, y i), 再赶到(x i+1, y i+1)呢?

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