摘要:
Problem Description Chiaki has 3n points p1,p2,…,p3n. It is guaranteed that no three points are collinear.Chiaki would like to construct n disjoint tr 阅读全文
摘要:
Problem Description Given an integer n, Chiaki would like to find three positive integers x, y and z such that: n=x+y+z, x∣n, y∣n, z∣n and xyz is maxi 阅读全文