import math

n1 = int(input())
a = list(map(int, input().split()))
n2 = int(input())
b = list(map(int, input().split()))

a1 = a[0]

a2 = 1
for i in range(1, len(a)):
    a2 *= a[i]

b1 = []
b2 = []
for i in range(len(b)):
    if i % 2 != 0:
        b1.append(b[i])
    else:
        b2.append(b[i])

b3 = 1
for i in range(len(b1)):
    b3 *= b1[i]

b4 = 1
for i in range(len(b2)):
    b4 *= b2[i]

x = a1 * b3
y = a2 * b4
z = math.gcd(x, y)

m = str(a).count('-') + str(b).count('-')

if m % 2 == 0:
    print(abs(x//z), abs(y//z))
else:
    print(-1 * abs(x//z), abs(y//z))