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WA的注意一下n为偶时被占用的点可能不止2个

Posted by 774889315 at 2019-11-27 21:19:51 on Problem 3269
举例:
4
0 0
2 0
0 3
2 3

矩形的四个顶点全被占用,只有8个点路长为10的

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