POJ 2826 An Easy Problem?! 叉积求多边形面积 【计算几何】

ACM博客_kuangbin POJ 2826 An Easy Problem?! An Easy Problem?! Time Limit: 1000MS   Memory Limit: 65536K Total Submissions: 7837   Accepted: 1145 Description It's raining outside. Farmer Johnson's bull B

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