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


x = y = 1
N = int(input())
A = list(map(int,input().split()))
M = int(input())
B = list(map(int,input().split()))

for i, a in enumerate(A) :
    if i == 0 :
        x *= a
    else :
        y *= a

for i, b in enumerate(B) :
    if i == 0 :
        y *= b
    else :
        x *= b

z = gcd(x, y)

ans1, ans2 = x//z, y//z

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

print(ans1, ans2)