#include <iostream>

using namespace std;

const int N = 1010;

int n, m, q;
int a[N][N], s[N][N];//初始化前缀和数组，s[0][0..N - 1] = 0, s[0..N - 1][0] = 0;

int main()
{
    cin >> n >> m >> q;

    for (int i = 1; i <= n; i ++ )//从下标1开始，优雅省事
        for (int j = 1; j <= m; j ++ )
            scanf("%d", &a[i][j]), s[i][j] = s[i - 1][j] + s[i][j - 1] - s[i - 1][j - 1] + a[i][j]; // 初始化前缀和数组

    while(q -- )
    {
        int x1, y1, x2, y2;
        scanf("%d%d%d%d", &x1, &y1, &x2, &y2);
        printf("%d\n",s[x2][y2] - s[x2][y1 - 1] - s[x1 - 1][y2] + s[x1 - 1][y1 - 1]); // 求区间部分和
    }
    return 0;
}