#include <iostream>
#include <cmath>
using namespace std;

int main() {
  int n;
  cin >> n;
  while (n--) {
    double xa, ya, ra, xb, yb, rb, d;
    cin >> xa >> ya >> ra >> xb >> yb >> rb;
    d = sqrt((xa - xb) * (xa - xb) + (ya - yb) * (ya - yb));
    if (d > ra + rb) cout << 0 << endl;
    else if (d + rb < ra) cout << 2 << endl;
    else if (d + ra < rb) cout << -2 << endl;
    else cout << 1 << endl;
  }
}
