mxqz扫描线求周长

P1856 [IOI1998] [USACO5.5] 矩形周长Picture

这份代码过不了这组数据 ``` input: 2 0 0 4 4 0 4 4 8 output: 24 ``` 但是不知道哪有问题
by diqiuyi @ 2023-03-31 22:53:23


细节离散化写挂
by diqiuyi @ 2023-04-03 13:49:51


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