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Re:先按半径把不符合要求的点kick掉，然后算出每个点到圆心的向量角，枚举每个点所在的直径，统计一下次数，然后取最大值, 有什么陷阱么？

Posted by tengshengbo at 2005-07-22 22:34:56 on Problem 1106
In Reply To:先按半径把不符合要求的点kick掉，然后算出每个点到圆心的向量角，枚举每个点所在的直径，统计一下次数，然后取最大值, 有什么陷阱么？ Posted by:sunmoonstar_love at 2005-07-22 13:35:54 
1:你如何计算角的？atan?注意pi/2，各个象限等
2：计算出角以后，按角排序，你做了吗？
3：每个角往后数180度时，注意浮点误差。
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