#include<iostream>
#include<stdio.h>
#include<math.h>
#include<iomanip>
#include<string>
#include<algorithm>
#include <cstdlib>
#include<stdlib.h>
#include<sstream>
#include<stack>
#include <climits>
using namespace std;

long long a[1007][1007];
long long b[1000006];
long long getXorSum(long long* begin, long long* end)
{
    long long ret = 0;
    for (long long* it = begin; it != end; ++it)
        ret ^= *it;
    return ret;
}

int main()
{
    long long t;
    cin >> t;
    long long n, m, q;
    long long u, v, x, y;
    long long count = 0;
    for (long long i = 0; i < t; i++)
    {
        cin >> n >> m >> q;
        for (long long j = 1; j <= n; j++)
        {
            for (long long k = 1; k <= m; k++)
            {
                cin>>a[j][k];
            }
        }
        for (long long j = 1; j <= q; j++)
        {
            cin >> u >> v >> x >> y;
            count = 0;
            for (long long k = u; k <= x; k++)
            {
                for (long long l = v; l <= y; l++)
                {
                    count = count + a[k][l];
                }
            }
            b[j-1] = count%(int)pow(2,64);
        }
        cout<<getXorSum(b,b+q)<<"\n";
    }
    return 0;
}