#include<iostream>
#include<string>

using namespace std;
int main(void){
     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;
         d = sqrt((xa-xb)*(xa-xb)+(ya-yb)*(ya-yb));
        
        int ans;
         d<ra-rb ? ans=2 : d<rb-ra ? ans=-2 : d<=ra+rb ? ans=1 : ans=0;
         cout<<ans<<endl;
	}


	return 0;
}