#include	<iostream>
#include	<cstdio>
#include	<cmath>

using namespace std;

int main(void) {
	while(1) {
		int ds;
		cin >> ds;
		if( cin.eof() )		break;
		
		for(int i = 0; i < ds; i++) {
			double d, r1[3], r2[3];
			for(int j = 0; j < 3; j++)
				cin >> r1[j];
			for(int j = 0; j < 3; j++)
				cin >> r2[j];
			
			d = (r2[0] - r1[0]) * (r2[0] - r1[0]) + (r2[1] - r1[1]) * (r2[1] - r1[1]);
			
			if( d < abs(r1[2] - r2[2]) ) {
				cout << "2" << endl;
			}else if( d < abs(r2[2] - r1[2]) ) {
				cout << "-2" << endl;
			}else if( (abs(r1[2] - r2[2]) < d && d < r1[2] + r2[2]) || d == r1[2] + r2[2] ) {
				cout << "1" << endl;
			}else {
				cout << "0" << endl;
			}
		}
	}
	return 0;
}