import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        // Here your code !
        Scanner sc = new Scanner(System.in);
        
        int N = sc.nextInt();
        Queue<Integer> q = new ArrayDeque<>();
        String str;
        int[] mas = new int[N];
        Arrays.fill(mas, -1);
        int now, next, prev;
        int count, result;
        
        
        mas[0] = 1;
        q.offer(1);
        while(!q.isEmpty()){
            now = q.poll();
            
            if(now == N){
                //result = mas[N-1];
                break;
            }
            
            str = Integer.toBinaryString(now);
            count = 0;
            for(char x: str.toCharArray()){
		        if(x == '1'){
			    count++;
		        }
            }

	        next = now + count;
	        if(next <= N && mas[next-1] == -1){
	            mas[next-1] = mas[now-1] +1;
	            q.offer(next);
	        }
	        
	        prev = now - count;
	        if(prev > 0 && mas[prev-1] == -1){
	            mas[prev-1] = mas[now-1] +1;
	            q.offer(prev);
	        }
	        
        }
        
        /*for(int i=0; i<N; i++){
            System.out.print(mas[i]+" ");
        }
        System.out.println("");*/
        System.out.println(mas[N-1]);
    }
}