using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;

class Program
{
    static int NN => int.Parse(ReadLine());
    static int[] NList => ReadLine().Split().Select(int.Parse).ToArray();
    static int[][] NArr(long n) => Enumerable.Repeat(0, (int)n).Select(_ => NList).ToArray();
    public static void Main()
    {
        Solve();
    }
    static void Solve()
    {
        var n = NN;
        var a = NList;
        var m = NN;
        var b = NList;
        var ch = 1L;
        var pa = 1L;
        ch *= a[0];
        for (var i = 1; i < n; ++i) pa *= a[i];
        for (var i = 0; i < m; ++i)
        {
            if (i % 2 == 0) pa *= b[i];
            else ch *= b[i];
        }
        if (pa < 0)
        {
            pa *= -1;
            ch *= -1;
        }
        var gcd = GCD(Math.Abs(ch), pa);
        ch /= gcd;
        pa /= gcd;
        WriteLine($"{ch} {pa}");
    }
    static long GCD(long a, long b)
    {
        if (a < b) return GCD(b, a);
        if (a % b == 0) return b;
        return GCD(b, a % b);
    }
}