import java.util.Scanner;

public class _1002 {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int result;

        for(int i=0; i<N; i++) {
            int x1 = sc.nextInt(); int y1 = sc.nextInt(); int r1 = sc.nextInt();
            int x2 = sc.nextInt(); int y2 = sc.nextInt(); int r2 = sc.nextInt();

            double dist = Math.sqrt(Math.pow(x1-x2,2) + Math.pow(y1-y2,2));
            double subDist = Math.abs(r1-r2);


            if (dist == 0 && r1 == r2) result = -1; // 두 원이 일치할 때
            else if (dist == r1 + r2 || dist == subDist) result = 1; // 두 원이 외접 or 내접할 때
            else if (r1 + r2 > dist && dist > subDist) result = 2;
            else result = 0;

            System.out.println(result);
        }

        sc.close();
    }
}