from operator import mul
from functools import reduce
from math import gcd
input()
A = list(map(int, input().split()))
input()
B = list(map(int, input().split()))

c = int(A[0]*B[1]) if len(B) > 1 else int(A[0])
m = int(reduce(mul, A)*reduce(mul, B)/c)

g = gcd(c, m)
while g > 1:
	c = c // g
	m = m // g
	g = gcd(c, m)

print(c, m)