2018年6月1日
Factors of Factorial
摘要： 问题 G: Factors of Factorial 题目描述 You are given an integer N. Find the number of the positive divisors of N!, modulo 109+7.Constraints1≤N≤103 输入 The inp 阅读全文
posted @ 2018-06-01 15:24 zangzang 阅读(238) 评论(0) 推荐(0)
Lining Up
摘要： 问题 H: Lining Up 题目描述 There are N people, conveniently numbered 1 through N. They were standing in a row yesterday, but now they are unsure of the orde 阅读全文
posted @ 2018-06-01 14:40 zangzang 阅读(782) 评论(0) 推荐(0)