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Re:这样的做法可以证明是正确的吗?

Posted by frkstyc at 2005-05-11 21:06:36 on Problem 1230
In Reply To:这样的做法可以证明是正确的吗? Posted by:harvard at 2005-05-11 16:45:25
这个应该是可以证明的,简单的说就是这样:覆盖某一列的墙是否要被拿掉,和它是否覆盖左边的列没有关系;拿掉右边界大的墙比拿掉右边界小的墙更优

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