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

class Program
{
    public void Proc()
    {
        Reader.IsDebug = false;
        ulong inpt = ulong.Parse(Reader.ReadLine());

        ulong normal = 0;
        ulong tmp = inpt;
        while(tmp > 0) {
            normal+=tmp;
            tmp = tmp / 2;
        }

        ulong cheat = inpt * 2;

        Console.WriteLine(cheat - normal);


    }





    public class Reader
    {
        public static bool IsDebug = true;
        private static String PlainInput = @"



123456789123456789


";
        private static System.IO.StringReader Sr = null;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (Sr == null)
                {
                    Sr = new System.IO.StringReader(PlainInput.Trim());
                }
                return Sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
    }
    static void Main()
    {
        Program prg = new Program();
        prg.Proc();
    }
}