from math import gcd

n1 = int(input())
alst = list(map(int, input().split()))
n2 = int(input())
blst = list(map(int, input().split()))

u = alst[0]
d = blst[0]
for num in alst[1:]:
    d *= num
for num in blst[1:]:
    u *= num

tmp = gcd(d, u)
print(u // tmp, d // tmp)