摘要: 链接: https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=4109 题意: 输入正整数n和k(1≤n,k≤1e9),计算sum(k mod i)(1≤i≤n) 阅读全文
posted @ 2018-09-12 21:10 Ctfes 阅读(197) 评论(0) 推荐(0) 编辑