using System;

namespace MonkeyEatPeaches
{
    class Program
    {
        static void Main(string[] args)
        {
            int left = 1;
            int days = 10;
            Console.WriteLine(MonkeyVomitPeaches(days, left));
            Console.ReadKey();
        }

        private static int MonkeyVomitPeaches(int days, int left)
        {
            if (days > 1)
            {
                left = (left + 1) * 2;
                days--;
                return MonkeyVomitPeaches(days, left);
            }
            else
            {
                return (left + 1) * 2;
            }
        }
    }
}