import math
def main():
    minus = 0
    n_1 = int(input())
    a = list(map(int,input().split()))
    a_top = a[0]
    a_bottom = a[1]
    for i in range(2,n_1):
        a_bottom *= a[i]
    if a_top < 0:
        a_top *= -1
        minus += 1
    if a_bottom < 0:
        a_bottom *= -1
        minus += 1
    gcd_1 = math.gcd(a_top,a_bottom)
    a_top //= gcd_1
    a_bottom //= gcd_1
    n_2 = int(input())
    b = list(map(int, input().split()))
    b_top = b[0]
    b_bottom = b[1]
    for i in range(2, n_2):
        b_bottom *= b[i]
    if b_top < 0:
        minus += 1
        b_top *= -1
    if b_bottom < 0:
        minus += 1
        b_bottom *= -1
    gcd_b = math.gcd(b_top, b_bottom)
    b_top //= gcd_b
    b_bottom //= gcd_b
    ans_top = a_top * b_bottom
    ans_bottom = b_top * a_bottom
    ans_gcd = math.gcd(ans_top,ans_bottom)
    ans_top = ans_top // ans_gcd
    ans_bottom = ans_bottom // ans_gcd
    print(ans_top * pow(-1,minus), ans_bottom)
main()