#include <iostream>
#include <algorithm>
#include <cctype>
#include <cstdio>
#include <math.h>
using namespace std;

int main(){

int n;
double xa,ya,ra,xb,yb,rb,d;

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