第1週課題5タレット

def terret(pos1,pos2,r1,r2):
	pow_dist_p1_p2 = ((pos1[0] - pos2[0]) ** 2 + (pos1[1] - pos2[1])**2) ** 0.5
	if pow_dist_p1_p2 == 0 and r1 == r2:
		return -1
	else:
		return 0
	if r1 + r2 > pow_dist_p1_p2:
		if r1 - r2 == pow_dist_p1_p2 or r2 - r1 == pow_dist_p1_p2: 
			return 1
		else:
			return 2
	elif  r1 + r2 == pow_dist_p1_p2 :
		return 1
	else:
		return 0
		
output_list=[]
case = int(input())
for num in range(case):
	x1,y1,r1,x2,y2,r2 = map(int,input().split())
	pos1 = [x1,y1]
	pos2 = [x2,y2]

	output_list.append(terret(pos1,pos2,r1,r2))

for num in range(case):
	print(output_list[num])