#include<iostream>
#include<cmath>
#include<algorithm>
using namespace std;
int main(void){
  int n;
  double xa, ya, ra, xb, yb, rb, d;

  cin >> n;
  for(int i = 0;i < n; i++){
    cin >> xa >> ya >> ra >> xb >> yb >> rb;
    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 << "0" << endl;
    else if(d >= ra - rb) cout << "1" << endl;
  }

}
