input()
numerator = list(map(int, input().split()))
input()
denominator = list(map(int, input().split()))

while len(numerator) > 1:
    denominator[0] *= numerator.pop()
while len(denominator) > 1:
    numerator[0] *= denominator.pop()

gcd, _ = numerator[0], denominator[0]
while _ > 0:
    gcd, _ = _, gcd%_

if denominator[0] < 0:
    numerator[0] *= -1
    denominator[0] *= -1

print(numerator[0]//gcd, denominator[0]//gcd)