from functools import reduce
from fractions import Fraction
from sys import stdin

def main():
    _ = int(input())
    A = list(map(int, input().split()))
    _ = int(input())
    B = list(map(int, input().split()))

    a = reduce(Fraction, A)
    B.reverse()
    b = 1 / reduce(Fraction, B)
    ans = a / b
    print(ans.numerator, ans.denominator)

input = lambda: stdin.readline()
main()