def gcd(x, y):
    if y == 0:
        return x
    return gcd(y, x % y)

n1 = int(input())
a = list(map(int, input().split()))
n2 = int(input())
b = list(map(int, input().split()))
bunbo = b[0]
bunsi = a[0]
for i in a[1:]:
    bunbo = bunbo * i
for i in b[1:]:
    bunsi = bunsi * i
g = gcd(bunsi, bunbo)
print(int(bunsi / g), int(bunbo / g))