#include <iostream>
#include <cmath>

int main(){
	int N;
	std::cin >> N;
	
	while(N--){
		double xa, ya, ra, xb, yb, rb;
		std::cin >> xa >> ya >> ra >> xb >> yb >> rb;
		double d = hypot((xa - xb), (ya - yb)); //distance
		
		if(d > ra + rb)
			std::cout << 0 << std::endl;
		else if(d < fabs(ra - rb))
			std::cout << (ra - rb ? 2 : -2) << std::endl;
		else
			std::cout << 1 << std::endl;
	}
    return 0;
}