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

public class Program
{
    public void Proc(){
        Reader.IsDebug = false;
        int masu = int.Parse(Reader.ReadLine());
        
        Queue<int> task = new Queue<int>();
        
        int[] map = new int[masu+1];
        map[1] = 1;
        task.Enqueue(1);
        while (task.Count > 0)
        {
            int pos = task.Dequeue();
            string str = Convert.ToString(pos, 2);
            int move = 0;
            foreach (char c in str)
            {
                if(c == '1') {
                    move++;
                }
            }
            
            int nextStep = map[pos] + 1;
            if(pos - move > 0) {
                if(map[pos-move] == 0 || map[pos-move] > nextStep) {
                    map[pos-move] = nextStep;
                    task.Enqueue(pos-move);
                } 
            }
            if(pos + move <= masu) {
                if(map[pos+move] == 0 || map[pos+move] > nextStep) {
                    map[pos + move] = nextStep;
                    task.Enqueue(pos + move);
                }
            }
        }
        
        int ans = map[masu];
        if(ans == 0) {
            ans = -1;
        }
        Console.WriteLine(ans);
    }

    public static void Main(string[] args)
    {
        Program prg = new Program();
        prg.Proc();
    }
}

class Reader
{
    public static bool IsDebug = true;
    
    private static System.IO.StringReader sr;
    
    public static string ReadLine() {
        if(IsDebug) {
            if(sr == null) {
                sr = new System.IO.StringReader(initStr.Trim());
            }
            return sr.ReadLine();
        } else {
            return Console.ReadLine();
        }
    }
    
    public static int[] GetInt(char delimiter = ' ') {
        string[] inpt = ReadLine().Split(delimiter);
        int[] ret = new int[inpt.Length];
        for(int i=0; i<inpt.Length; i++) {
            ret[i] = int.Parse(inpt[i]);
        }
        return ret;
    }
    
    private static string initStr = @"

4


    ";
}