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

public class yukicoder
{
    public static decimal meiseiti(decimal n)
    {
        if(n == 0) return 0;
        return n + meiseiti(Math.Truncate(n / 2));
    }
    
    public static void Main()
    {
	decimal input = decimal.Parse(Console.ReadLine());

        Console.WriteLine((input * 2) - meiseiti(input));
    }
}