二维差分

#include<bits/stdc++.h>
using namespace std;const int N = 1e3 + 5;
int a[N][N],d[N][N];int main()
{int n, m, q;cin >> n >> m >> q;for (int i = 1 ; i <= n; i++){for (int j = 1; j <= m; j++){cin >> a[i][j];d[i][j] = a[i][j] + a[i-1][j-1] - a[i-1][j] - a[i][j-1];}}while(q--){int x1,y1,x2,y2,c;cin >> x1 >> y1 >> x2 >> y2 >> c;d[x1][y1] += c;d[x2 + 1][y2 + 1] += c;d[x1][y2 + 1] -= c;d[x2 + 1][y1] -= c;}for (int i = 1 ; i <= n; i++){for (int j = 1; j <= m; j++){a[i][j] = d[i][j] - a[i-1][j-1] + a[i-1][j] + a[i][j-1];cout << a[i][j] << ' ';}cout << '\n';}return 0;
}