摘要: 前缀和 题目:https://www.acwing.com/activity/content/problem/content/829/1/ #include<iostream> using namespace std; const int maxn = 1e5; int n, m, l, r; in 阅读全文
posted @ 2020-10-11 11:09 ATKevin 阅读(98) 评论(0) 推荐(0) 编辑