from math import *

N1 = int(input())
A = list(map(int, input().split()))
N2 = int(input())
B = list(map(int, input().split()))
X, Y = 1, 1
for i, a in enumerate(A):
    if i == 0:
        X *= a
    else:
        Y *= a
            
for i, b in enumerate(B):
    if i % 2:
        X *= b
    else:
        Y *= b
        
g = gcd(X, Y)
X //= g
Y //= g
if X * Y < 0:
    print(-abs(X), abs(Y))
else:
    print(abs(X), abs(Y))