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

def main():
    N1 = int(input())
    A = list(map(int, input().split()))
    N2 = int(input())
    B = list(map(int, input().split()))

    a = reduce(Fraction, A)
    b = B[-1]
    if N2 > 1:
        for i in range(N2 - 2, -1, -1):
            b = Fraction(B[i], b)
    ans = a / b
    print(ans.numerator, ans.denominator)

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