2018年10月19日
hdu 4135 Co-prime（容斥定理入门）
摘要： Problem Description Given a number N, you are asked to count the number of integers between A and B inclusive which are relatively prime to N.Two inte 阅读全文
posted @ 2018-10-19 07:55 霜雪千年 阅读(295) 评论(0) 推荐(0) 编辑