#include<stdio.h>
#include<math.h>

int main(){
	int n;
	scanf("%d",&n);
	while(n--){
		int x1,y1,r1;
		int x2,y2,r2;
		scanf("%d %d %d",&x1,&y1,&r1);
		scanf("%d %d %d",&x2,&y2,&r2);
		double sum = (x1-x2)*(x1-x2)+(y1-y2)*(y1-y2);
		sum = sqrt(sum);
		if(sum==(r1+r2)){
			printf("3\n");
		}else if(sum>(r1+r2)){
			printf("4\n");
		}else if(sum<(r1+r2)&&sum>abs(r1-r2)){
			printf("2\n");
		}else if(sum==abs(r1-r2)){
			printf("1\n");
		}else if(sum==0){
			printf("-1\n");
		}else if(sum<abs(r1-r2)&&sum>0){
			printf("0\n");
		}
	}
	return 0;
}