#define _USE_MATH_DEFINES
 
#include <iostream>
#include <cstdio>
#include <algorithm>
#include <string>
#include <vector>
#include <math.h>

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 = (xa-xb)*(xa-xb)+(ya-yb)*(ya-yb);
		if(d>ra*ra+rb*rb){
			cout << 0 << endl;
		}else if(d+rb*rb<ra*ra){
			cout << 2 << endl;
		}else if(d+ra*ra<rb*rb){
			cout << -2 << endl;
		}else{
			cout << 1 << endl;
		}
	}

	return 0;
}