using System;
//using System.Collections.Immutable;
using System.Linq;
using System.Collections.Generic;

namespace ConsoleApp1
{
    class Program
    {
        public static Int32 lcm(Int32 a, Int32 b)
        {
            return a * b / gcd(a, b);
        }
        public static Int32 gcd(Int32 a, Int32 b)
        {
            if (a < b) return gcd(b, a);
            while (b != 0)
            {
                var remainder = a % b;
                a = b;
                b = remainder;
            }

            return a;
        }
        static void Main(string[] args)
        {
            Int32 n_1 = Int32.Parse(Console.ReadLine());
            Int32[] A = Console.ReadLine().Split(' ').Select(i => Int32.Parse(i)).ToArray();
            Int32 n_2 = Int32.Parse(Console.ReadLine());
            Int32[] B = Console.ReadLine().Split(' ').Select(i => Int32.Parse(i)).ToArray();
            Int32 a = 1;
            for (Int32 i = 0; i < n_1; i++)
            {
                if (i == 1) continue;
                a = lcm(a, A[i]);
            }

            Int32 b = 0;
            for (Int32 i = 0; i < n_2; i++)
            {
                if (i == 1) continue;
                b = lcm(b, B[i]);
            }

            a = lcm(B[1], a);
            b = lcm(A[1], b);
            var gc = gcd(a, b);
            a /= gc;
            b /= gc;
            Console.WriteLine("{} {}",a,b);
        } 
    }
}