摘要：Problem Description Eric is playing a game on an infinite plane. On the plane, there is a circular area with radius r1 called the Scoring Area. Every 阅读全文

摘要：链接：https://ac.nowcoder.com/acm/contest/11253/F 来源：牛客网 题目描述 ZYT and ZFeT are great PUAs and both have two girlfriends,but they never think that their g 阅读全文

摘要：After some basic geometric lessons, Cuber QQ has learned that one can draw one and only one circle across three given distinct points, on a 2D plane. 阅读全文

摘要：01 A 什么是凸包？ NailslnTheTable PaintBlending ColorSpace ConvexHull：所有分量总和为100%且非负。 B Extremity（极性） 极点（Extreme Point）：在一组点中，沿着这个点座直线，必然能找到一条直线，使得其他所有点都在该直 阅读全文