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

typedef double dbl;

int main() {
	int n;
	cin >> n;
	for (int i = 0; i < n; i++) {
		dbl x[2], y[2], r[2];
		for (int j = 0; j < 2; j++) {
			cin >> x[j] >> y[j] >> r[j];
		}
		dbl d = sqrt(pow(x[1] - x[0], 2) + pow(y[1] - y[0], 2));
		if (d < fabs(r[0] - r[1])) {
			if (r[0] > r[1]) {
				cout << 2 << endl;
			}
			else {
				cout << -2 << endl;
			}
		}
		else if (d > r[0] + r[1]) {
			cout << 0 << endl;
		}
		else cout << 1 << endl;
	}
}
