#include<iostream>
#include<cmath>
using namespace std;
int resolve(double x1, double y1, double r1, double x2, double y2, double r2){
	double d=sqrt((x1-x2)*(x1-x2)+(y1-y2)*(y1-y2));
	if(d<abs(r1-r2)){
	    if(r1>r2)   return 2;
	    else    return -2;
	}
	else if(d>=abs(r1-r2) && d<=(r1+r2))    return 1;
	else    return 0;
}
int main(){
	int N;
	cin>>N;
	while(N--){
		double x1,y1,r1, x2, y2, r2;
		cin>>x1>>y1>>r1>>x2>>y2>>r2;
		cout<<resolve(x1, y1, r1, x2, y2, r2);
		cout<<endl;
	}
	return 0;
}
