#include <iostream>
#include <cmath>

using namespace std;

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