import math
from functools import reduce
from operator import mul

n = int(input())
a = list(map(int, input().split()))
m = int(input())
b = list(map(int, input().split()))

a1 = a[0]
a2 = reduce(mul, a[1:])
b1 = b2 = 1

for i in range(m):
    if i % 2 == 0:
        b1 *= b[i]
    else:
        b2 *= b[i]

ans1 = a1 * b2
ans2 = a2 * b1

gcd = math.gcd(ans1, ans2)

print(ans1//gcd, ans2//gcd)