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

namespace Programming
{
    class Program
    {
        static void Main(string[] args)
        {
            int L = int.Parse(Console.ReadLine());
            int N = int.Parse(Console.ReadLine());
            string[] S = new string[N];

            S = Console.ReadLine().Split(' ');

            int C;

            C = (int)System.Math.Pow(2, L - 3) * N;

            Console.WriteLine(C);
        }
    }
}