21B - Intersection - CodeForces Solution

a1, b1, c1 = map(int, input().split())
a2, b2, c2  = map(int, input().split())
if a1*b2 == a2*b1:
    if ((not a1 and not b1 and c1 ) or (not a2 and not b2 and c2)):
        print(0)
    elif (a1*c2 == a2*c1) and (c1*b2 == c2*b1):
        print(-1)
    else:
        print(0)
else:
    print(1)