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

public class Program
{

    public void Proc()
    {
        this.Target = long.Parse(Reader.ReadLine());
        long ans = GetAns(1, 0);
        Console.WriteLine(ans);
    }

    private long GetAns(long num, long subTotal) {
        if(num>=Target) {
            long ret = num - Target + subTotal;
            this.Min = Math.Min(this.Min, ret);
            return ret;
        }

        if(subTotal>this.Min) {
            return int.MaxValue;
        }

        long ans = GetAns(num * 2, subTotal + 1);
        ans = Math.Min(ans, this.GetAns(num - 1, subTotal + 1));
        this.Min = Math.Min(this.Min, ans);
        return ans;
    }

    private long Target;

    private long Min = int.MaxValue;

    public class Reader
    {
        private static StringReader sr;
        public static bool IsDebug = false;
        public static string ReadLine()
        {
            if (IsDebug)
            {
                if (sr == null)
                {
                    sr = new StringReader(InputText.Trim());
                }
                return sr.ReadLine();
            }
            else
            {
                return Console.ReadLine();
            }
        }
        private static string InputText = @"

255


";
    }

    public static void Main(string[] args)
    {
#if DEBUG
        Reader.IsDebug = true;
#endif
        Program prg = new Program();
        prg.Proc();
    }
}