from fractions import gcd


def main():
    n = int(input())
    a = list(map(int, input().split()))
    m = int(input())
    b = list(map(int, input().split()))

    ue = a[0]
    ue2 = 1
    for i in range(1, n):
        ue2 *= a[i]

    shita = b[0]
    shita2 = 1
    for i in range(1, m):
        shita2 *= b[i]

    ue *= shita2
    shita *= ue2

    g = gcd(ue, shita)
    print(ue//g, shita//g)


if __name__ == '__main__':
    main()