from math import gcd
n1 = int(input())
A = list(map(int, input().split()))
n2 = int(input())
B = list(map(int, input().split()))
X1 = A[0]
Y1 = 1
for i in range(1, n1):
    Y1 *= A[i]
X2 = 1
for i in range(1, n2, 2):
    X2 *= B[i]
Y2 = 1
for i in range(0, n2, 2):
    Y2 *= B[i]
X3 = X1 * X2
Y3 = Y1 * Y2
g = gcd(X3, Y3)
ans1 = X3 // g
ans2 = Y3 // g
if ans2 < 0:
    ans2 *= -1
    ans1 *= -1
print(ans1, ans2)