摘要：
Problem Description A number sequence is defined as follows:f(1) = 1, f(2) = 1, f(n) = (A * f(n - 1) + B * f(n - 2)) mod 7.Given A, B, and n, you are 阅读全文
摘要：
Problem Description Contest time again! How excited it is to see balloons floating around. But to tell you a secret, the judges' favorite time is gues 阅读全文