#include <iostream>
#include <cmath>
using namespace std;
int main(){
  double xa,ya,ra,xb,yb,rb;
  int n;
  cin >> n;
  while(n--){
    cin >>  xa >> ya >> ra >> xb >> yb >> rb;
    double d = sqrt(pow(xa - xb,2) + pow(ya - yb,2));
    if(d + rb < ra){
      cout << '2' << endl;
    }else if(d + ra < rb ){
      cout << '-2' << endl;
    }else if(ra + rb < d){
      cout << '0' << endl;
    }else cout << '1' << endl;
  }
  return 0;
}