Leocsse

摘要： #include <bits/stdc++.h> using namespace std; const int N = 1e5 + 5; int n, m; int w[N]; struct node { int l, r; LL sum, add; }tr[N * 4]; void pushup( 阅读全文

摘要： https://www.acwing.com/problem/content/299/ 1 #include <bits/stdc++.h> 2 using namespace std; 3 4 const int N = 1e3 + 5, mod = 1e9 + 7; 5 6 int n, m; 阅读全文