import math
import sys
a=int(sys.stdin.readline())
for i in range(a):
    x1,y1,r1,x2,y2,r2=map(float,sys.stdin.readline().split())
    d=math.sqrt(((x2-x1)**2)+((y2-y1)**2)) #두 중심사이의 거리
    if x1==x2 and y1==y2:#원의 중심이 같을때
        if r1==r2:
            print(-1)
        else:
            print(0)
    elif d==r1 or d==r2: #원이 내접할때
        print(1)
    else: #원의 중심이 다를때
        if r1+r2==d: #외접할때
            print(1)
        elif r1+r2>d:
            print(2)
        else:
            print(0)

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