#include<iostream>
#include<cmath>
int main()
{
    int n;
    std::cin >> n;
    for (int i = 0; i < n; i++)
    {
        double xa, ya, ra, xb, yb, rb;
        std::cin >> xa >> ya >> ra >> xb >> yb >> rb;
        double d = hypot(xa - xb, ya - yb);
        if (d < abs(ra - rb))
        {
            std::cout << 2 * (ra < rb ? -1 : 1) << std::endl;
        }
        else if (d <= ra + rb)
        {
            std::cout << 1 << std::endl;
        }
        else
        {
            std::cout << 0 << std::endl;
        }
    }
    return 0;
}
