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

int main(){
	double xa, ya, ra, xb, yb, rb, d;
	int n;

	cin >> n;
	for(int i = 0; i < n; i++){
		cin >> xa >> ya >> ra >> xb >> yb >> rb;
		d = (xa - xb) * (xa - xb) + (ya - yb) * (ya - yb);
		d = sqrt(d);
		if(ra > rb){
			if(d < ra - rb) cout << "2" << endl;
			else if(d == ra - rb || d == ra + rb) cout << "1";
			else cout << "0" << endl;
		}else {
			if(d < rb - ra) cout << "-2" << endl;
			else if(d == rb - ra || d == ra + rb) cout << "1" << endl;
			else cout << "0" << endl;
		}
	}

	return 0;
}