n = int(input())
A = list(map(int,input().split()))
m = int(input())
B = list(map(int,input().split()))

def gcd(a,b):
    while True:
        r = a % b
        a = b
        b = r
        if r == 0:
            return a
si = A[0]
bo = 1
for a in A[1:]:
    bo *= a
for i in range(0,m,2):
    bo *= B[i]
for i in range(1,m,2):
    si *= B[i]
d = gcd(abs(si),abs(bo))
si //= d
bo //= d
if bo < 0:
    si *= -1
    bo *= -1
print(si,bo)