using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace foryuki
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] s = new int[] { 2, 3, 5, 7, 11, 13 };
            int[] g = new int[] { 4, 6, 8, 9, 10, 12 };

            int[] P = ConvertStringArrayToIntArray(Console.ReadLine().Split());

            double  ss = (double)s.Sum() / 6;
            double  sg = (double) g.Sum() / 6;
            double ans;

            ans = Math.Pow(ss, P[0]) * Math.Pow(sg, P[1]);

            Console.WriteLine(ans);
            Console.ReadLine();
        }

        //-------------------------------------------------------------

        static int[] ConvertStringArrayToIntArray(string[] str)
        {
            int[] b = Array.ConvertAll<string, int>(str, delegate(string value)
                {
                    return int.Parse(value);
                });
            return b;
        }

        static List<int> ConvertStringArrayToIntList(string[] str)
        {
            var list = new List<int>();
            foreach (var c in str)
            {
                list.Add(int.Parse(c));
            }
            return list;
        }
    }
}