#include <fstream>

using namespace std;

ifstream in("xerox.in");
ofstream out("xerox.out");

int t, n, m, dx, dy, x, y;

int main()
{
    in >> t;
    while (t--)
    {
        in >> n >> dx >> dy;
        int s = 0;
        for (int i = 1; i <= n; ++i)
        {
            in >> m;
            for (int j = 1; j <= m; ++j)
            {
                in >> x >> y;
                s ^= x;
                s ^= y;
            }
        }
        out << s << '\n';
    }
    return 0;
}