using static System.Math;
using System;

public class P
{
    public int a { get; set; }
    public int b { get; set; }
    public double v { get; set; }
}

public class Hello
{
    static void Main()
    {
        var n1 = int.Parse(Console.ReadLine().Trim());
        string[] line = Console.ReadLine().Trim().Split(' ');
        var a1 = Array.ConvertAll(line, int.Parse);
        var n2 = int.Parse(Console.ReadLine().Trim());
        line = Console.ReadLine().Trim().Split(' ');
        var a2 = Array.ConvertAll(line, int.Parse);
        var ans1 = getA(a1, n1) * a2[0];
        var ans2 = getA(a2, n2) * a1[0];
        var ans = gcd(Abs(ans1), Abs(ans2));
        ans1 /= ans;
        ans2 /= ans;
        ans1 = ans1 * a1[0] >= 0 ? Abs(ans1) : -Abs(ans1);
        ans2 = ans2 * a2[0] >= 0 ? Abs(ans2) : -Abs(ans2);
        Console.WriteLine("{0} {1}",ans2,ans1);
    }
    static  long getA (int [] a , int n)
    {
        var ans = 1L;
        for (int i = 1; i < n; i++) ans *= a[i];
        return ans;
    }
     static long gcd(long a, long b)
    {
        if (a < b) return gcd(b, a);
        while (b != 0)
        {
            var w = a % b;
            a = b;
            b = w;
        }
        return a;
    }
}