using System;
using System.Linq;


namespace PC_Dice_CS
{
    class Program
    {
        static void Main(string[] args)
        {
            int[] PC = Console.ReadLine().Split(' ').Select(v => int.Parse(v)).ToArray();
            int P = PC[0];
            int C = PC[1];
            double EP = (2 + 3 + 5 + 7 + 11 + 13) / 6.0;
            double EC = (4 + 6 + 8 + 9 + 10 + 12) / 6.0;
            double ex = 1.0;
            for (int p = 0; p < P; p++)
            {
                ex *= EP;
            }
            for (int c = 0; c < C; c++)
            {
                ex *= EC;
            }
            Console.WriteLine("{0}", ex);
        }
    }
}