Oblongs and Right Triangles 判断矩形 直角三角形

问题 B: Oblongs and Right Triangles 时间限制: 1 Sec  内存限制: 128 MB 提交: 31  解决: 4 [提交] [状态] [讨论版] [命题人:admin] 题目描述 There are N points on the plane; the i-th point is at (Xi, Yi). There may be multiple points

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