import java.util.*;

public class main{
    public static void main(String[] args){
        Scanner sc =new Scanner(System.in);
        int N = sc.nextInt();
        
        int list[] = new int[N + 15];
        list[1] = 1;
        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;
                        q1.add(Num-one);
                    }
                }
                if(Num+one<=N){
                    if(list[Num+one]==0){
                        count=count+1;
                        list[Num+one]=count;
                        q1.add(Num+one);
                    }
                }
            }
            if(list[N]!=0){
                System.out.println(list[N]);
                i = i+1;
                break;
            }else if(q1.isEmpty()){
                System.out.println(-1);
                i = i+1;
                break;
            }
        }
    }
}