import java.util.LinkedList;
import java.util.Scanner;

public class BitSugoroku {

    public static void main(String[] args) {
        
        Scanner scanner = new Scanner(System.in);
        
        int n = scanner.nextInt();
        
        // 1 <= N <= 10000
        int[] distance = new int[10001]; //[0] ～ [10000]
        
        LinkedList<Integer> queue = new LinkedList<>(); 
        queue.add(1);
        
        distance[1] = 1;
        for(int i=2;i<=n;i++){
            distance[i] = -1;
        }
       
        int bitCount;
        int num;
        int plus;
        int minus;
        
        while(!queue.isEmpty()){
            
            num = queue.poll();
            bitCount = Integer.bitCount(num);
            plus = num + bitCount;
            minus = num - bitCount;
            
            if(minus >= 1){
                if(distance[minus] == -1){
                    distance[minus] = distance[num] + 1;
                    queue.add(minus);
                }
            }
            
            if(plus <= n){
                if(distance[plus] == -1){
                    distance[plus] = distance[num] + 1;
                    queue.add(plus);
                }
            }
        }
       
        System.out.println(distance[n]); 
       
    }
}