摘要: #include<bits/stdc++.h> using namespace std; using i64 = long long; const int N = 1e6 + 5; //本模板是从左往右扫的,从下往上扫同理 #define ls (rt<<1) #define rs (rt<<1|1 阅读全文
posted @ 2024-05-18 22:19 Ke_scholar 阅读(12) 评论(0) 推荐(0) 编辑