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谢了

Posted by atlas_of_rruucc at 2005-03-11 23:44:02 on Problem 2277
In Reply To:就是第一个碰到的 Posted by:T1 at 2005-03-11 22:12:51
> 对于每个点,先判断是不是出界了
> 再判断是不是和前面某个相交了(按顺序)
> 
> 等所有的点都算完了,看看是不是闭合的

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