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【题目大意】:一个圆上有N个点,顺时针从0到N-1排列。给出M条线连接两个点,要么在圆外要么在圆内,判断给出的所有线段是否不规范相交。

Posted by linmeng at 2009-08-07 20:05:17 on Problem 3207
看了好久才看懂啊。。。

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