geometry 썸네일형 리스트형 Center of symmetry http://acm.pku.edu.cn/JudgeOnline/problem?id=2526 Description Given is a set of n points with integer coordinates. Your task is to decide whether the set has a center of symmetry. A set of points S has the center of symmetry if there exists a point s (not necessarily in S) such that for every point p in S there exists a point q in S such that p-s = s-q. Input The first line of input contains a n.. 더보기 이전 1 다음