import java.util.Scanner;

public class Main {
    
    private static int N;
    private static int min = -1;
    private static boolean flag[] = new boolean[10000];

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        N = sc.nextInt();
        
        dfs(1, 1);

        System.out.println(min);
    }
    
    private static void dfs(int a, int c){

        if(flag[a-1] == false){
            flag[a-1] = true;
        }else{
            return;
        }

        if(min != -1 && c>=min){
            return;
        }

        if(a==N){
            min = c;
        }
        
        int bit = Integer.bitCount(a);

        if(a+bit <= N){
            dfs(a+bit, c+1);
        }
        
        if(a-bit > 1){
            dfs(a-bit, c+1);
        }
    }
    
}