t=int(input()) for i in range(t): x1,y1,r1,x2,y2,r2=map(int,input().split()) dist=((x2-x1)**2+(y2-y1)**2)**0.5 if x1==x2 and y1==y2: if r1==r2: print(-1) else: print(0) else: if r1>dist+r2 or r2>dist+r1 or dist>r1+r2: print(0) elif r1==dist+r2 or r2==dist+r1 or r1+r2==dist: print(1) else: print(2)