题解

上代码！！

#include <bits/stdc++.h>
using namespace std;
long long a[1005][1005];
int main()
{
    int n, m, q;
    cin >> n >> m >> q;
    for (int i = 1; i <= n; i++)
    {
        for (int j = 1; j <= m; j++)
        {
            int x;
            cin >> x;
            a[i][j] = a[i - 1][j] + a[i][j - 1] - a[i - 1][j - 1] + x;
        }
    }
    for (int i = 1; i <= q; i++)
    {
        int a1, b1, x, y;
        cin >> a1 >> b1 >> x >> y;
        long long ans = a[x][y] - a[a1 - 1][y] - a[x][b1 - 1] + a[a1 - 1][b1 - 1];
        cout << ans << endl;
    }
    return 0;
}