import java.io.Console;
import java.util.*;

	public class No3 {
	    public static void main(String[] args){
			Console console = System.console();
			int N = Integer.parseInt(console.readLine());
/*			
	        Scanner sc =new Scanner(System.in);
	        int N = sc.nextInt();
*/	        
	        int list[] = new int[N + 15];
	        List<Integer> q1 = new ArrayList<Integer>();
	        List<Integer> q2 = new ArrayList<Integer>();
	        
	        q1.add(1);
	        int count = 0;
	        int i = 0;
	        
	        while(i<1){
	            q1.addAll(q2);
	            q2.clear();

	            for(int Num : q1){
	                int one = Integer.bitCount(Num);
	                if(Num-one>0){
	                    if(list[Num-one]==0){
	                        count=count+1;
	                        list[Num-one]=count;
	                        q2.add(Num-one);
	                    }
	                }
	                if(Num+one<=N){
	                    if(list[Num+one]==0){
	                        count=count+1;
	                        list[Num+one]=count;
	                        q2.add(Num+one);
	                    }
	                }
	            }
	            if(list[N]!=0){
	                System.out.println(list[N]);
	                i = i+1;
	                break;
	            }else if(q2.isEmpty()){
	                System.out.println(-1);
	                i = i+1;
	                break;
	            }
	        }
	    }
	}