更优雅的写法
没用的循环去掉了!
#include <iostream>
using namespace std;
const int N = 1010;
int n, m, k, a[N][N], b[N][N];
void insert(int x1, int y1, int x2, int y2, int c){
b[x1][y1] += c;
b[x1][y2 + 1] -= c;
b[x2 + 1][y1] -= c;
b[x2 + 1][y2 + 1] += c;
}
int main(){
cin >> n >> m >> k;
for(int i = 1; i <= n; i++)
for(int j = 1; j <= m; j++)
cin >> a[i][j], insert(i, j, i, j, a[i][j]);
while(k--){
int x1, y1, x2, y2, c;
cin >> x1 >> y1 >> x2 >> y2 >> c;
insert(x1, y1, x2, y2, c);
}
for(int i = 1; i <= n; i++){
for(int j = 1; j <= m; j++){
b[i][j] += b[i - 1][j] + b[i][j - 1] - b[i - 1][j - 1];
cout << b[i][j] << " ";
}
cout << endl;
}
return 0;
}