摘要：
C. Five Dimensional Points time limit per test 2 seconds memory limit per test 256 megabytes input standard input output standard output C. Five Dimen 阅读全文
摘要：
Problem Statement You are given a positive integer N. Find the number of the pairs of integers u and v(0≦u,v≦N) such that there exist two non-negative 阅读全文