摘要: 线段树 #include<bits/stdc++.h> using namespace std; int a[1000010],n,m; struct xd_tree { int l,r,sum; }; xd_tree tree[4000010]; #define flzc (root<<1) #d 阅读全文
posted @ 2025-05-26 22:23 BIxuan—玉寻 阅读(30) 评论(0) 推荐(1)