N1 = int(input())
A = list(map(int,input().split()))
N2 = int(input())
B = list(map(int,input().split()))

U = A[0]
S = 1
for k in range(1,N1):
    S *= A[k] 
for k in range(N2):
    if k%2 == 0:
        S *= B[k]
    else:
        U *= B[k]

def gcd(a,b):
    if b == 0:
        return a
    return gcd(b,a%b)
P = gcd(U,S)
print(U//P,S//P)