2018年1月10日
【BZOJ2818】Gcd（莫比乌斯反演）
摘要： 【BZOJ2818】Gcd（莫比乌斯反演） 题面 Description 给定整数N，求1 include include include include include include include include include using namespace std; define MAX 阅读全文
posted @ 2018-01-10 20:42 小蒟蒻yyb 阅读(489) 评论(0) 推荐(0)
【CJOJ2512】gcd之和（莫比乌斯反演）
摘要： 【CJOJ2512】gcd之和（莫比乌斯反演） 题面 给定$n,m(n,m include include include include include include include include include using namespace std; define MOD 99824435 阅读全文
posted @ 2018-01-10 20:18 小蒟蒻yyb 阅读(1357) 评论(2) 推荐(0)
【BZOJ3994】约数个数和（莫比乌斯反演）
摘要： 【BZOJ3994】约数个数和（莫比乌斯反演） 题面 求$$\sum_{i=1}^n\sum_{j=1}^md(ij)$$ 多组数据$( include include include include include include include include include using nam 阅读全文
posted @ 2018-01-10 16:55 小蒟蒻yyb 阅读(729) 评论(1) 推荐(0)