using System;

class Program
{
    static void Main()
    {
        int L = int.Parse(Console.ReadLine());
        int K = int.Parse(Console.ReadLine());
        string[] stopCodons = Console.ReadLine().Split();

        // 残りの L-3 文字の組み合わせ
        long ways = (long)K * (1L << (L - 3));

        Console.WriteLine(ways);
    }
}