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Re:题目中给出的错误的PI是何用意？

Posted by cangratul at 2009-09-20 17:40:15 on Problem 1225
In Reply To:题目中给出的错误的PI是何用意？ Posted by:shidamirai at 2009-05-22 16:15:08 
用题目的PI才能得出和测试数据一样的答案吧,另外题目给的A.B.C是满足逆时针关系的,angle θ是指A.B所在直线到X.Y所在直线的逆时针方向的角度[-90,90]
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