10 2021 档案

摘要:请大家先看问题: You are given n points on a plane. All the points are distinct and no three of them lie on the same line. Find the number of parallelograms w 阅读全文
posted @ 2021-10-05 16:26 丘丘王 阅读(363) 评论(0) 推荐(0) 编辑

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