try :
    from math import gcd
except Exception as error :
    from fractions import gcd

ans1 = ans2 = 1

N = int(input())
A = list(map(int,input().split()))
M = int(input())
B = list(map(int,input().split()))

for i in range(N) :
    if i == 0 :
        ans1 *= A[i]
    else :
        ans2 *= A[i]


for i in range(M) :
    if i % 2 == 0 :
        ans2 *= B[i]
    else :
        ans1 *= B[i]

z = gcd(ans1, ans2)

ans1 //= z
ans2 //= z

if ans2 < 0 :
    ans1 *= -1
    ans2 *= -1

print(ans1, ans2)