using System;
using System.Collections.Generic;
using System.Linq;
public class Program{
    public static void Main(){
        var n = int.Parse(Console.ReadLine());
        var a = new int[n];
        var b = new int[n];
        var c = new Queue<int>();
        for(var i=0;i<n;i++){
            a[i] = Convert.ToString(i+1,2).Count(m => m=='1');
            b[i] = -1;
        }
        c.Enqueue(0);
        b[0] = 1;
        while(c.Count>0){
            var k = c.Dequeue();
            if(k+a[k]<n&&b[k+a[k]]==-1){
                c.Enqueue(k+a[k]);
                b[k+a[k]] = b[k] + 1;
            }
            else if(k-a[k]>0&&b[k-a[k]]==-1){
                c.Enqueue(k-a[k]);
                b[k-a[k]] = b[k] + 1;
            }
        }
        Console.WriteLine(b[n-1]);
    }
}