def gcd(a, b):
    if b == 0:
        return a
    else:
        return gcd(b, a%b)
    
n = int(input())
a = list(map(int, input().split()))
m = int(input())
b = list(map(int, input().split()))

a1 = a[0]
a2 = 1

for i in a[1:]:
    a2 *= i

for i in range(m):
    if i % 2 == 0:
        a2 *= b[i]
    else:
        a1 *= b[i]

g = gcd(a1, a2)

print(a1//g, a2//g)