from fractions import gcd

def main():
    n1 = int(input())
    A = list(map(int, input().split()))
    n2 = int(input())
    B = list(map(int, input().split()))
    Numerator = 1
    denominator = 1
    for i in range(n1):
        if i == 0:
            denominator *= A[i]
        else:
            Numerator *= A[i]
    
    for j in range(n2):
        if j % 2 == 0:
            Numerator *= B[j]
        else:
            denominator *= B[j]

    div = gcd(Numerator, denominator)

    if Numerator // div < 0:
        print(-(denominator // div), -(Numerator // div))    
    else:
        print(denominator // div, Numerator // div)

    



if __name__ == "__main__":
    main()