摘要：题目描述 Description Have you ever played quoit in a playground? Quoit is a game in which flat rings are pitched at some toys, with all the toys encircled 阅读全文

摘要：题目描述 Description Xaviera现在遇到了一个有趣的问题。平面上有N个点，Xaviera想找出周长最小的三角形。由于点非常多，分布也非常乱，所以Xaviera想请你来解决这个问题。为了减小问题的难度，这里的三角形也包括共线的三点。 输入描述 Input Description 第一行 阅读全文