#!/usr/bin/env python3
# †
from fractions import Fraction as frac
from functools import reduce

###
if __name__ == '__main__':
    input()
    a = list(map(int, input().split()))
    input()
    b = list(map(int, input().split()))
    nume = reduce(lambda x, y: frac(x, y), a)
    deno = reduce(lambda x, y: frac(y, x), reversed(b))
    res = frac(nume, deno)
    print(res.numerator, res.denominator)