二维差分算法模版
二维差分算法模版——— AcWing 798. 差分矩阵#include <iostream>using namespace std;const int N 1010;int n, m, q;
int a[N][N], b[N][N];void insert(int x1, int y1, int x2, int y2, int c)
{b[x1][y1] c;b[x2 1][y1] - c;b[x1][y2 1] - c;b[x2 1][y2 1] …
2026/8/5 12:13:55