lqybzx的专栏

Problem Description Rock-paper-scissors is a zero-sum hand game usually played between two people, in which each player simultaneously forms one of three shapes with an outstretched hand. These sha

Problem Description Function Fx,ysatisfies: For given integers N and M,calculate Fm,1 modulo 1e9+7.   Input There is one integer T in the first line. The next T lines,each line

Problem Description In mathematics, the function d(n) denotes the number of divisors of positive integer n. For example, d(12)=6 because 1,2,3,4,6,12 are all 12's divisors. In this prob