import java.util.ArrayDeque;
import java.util.Queue;
import java.util.Scanner;
 
class Main {
	int n;
	Queue<Integer> q;
	int[] move;
	int[] step;
	
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		Main m = new Main(sc);
		m.solve();
	}
	Main(Scanner sc){
		n = sc.nextInt();
		q = new ArrayDeque<Integer>();
		move = new int[n];
		step = new int[n];
		for(int i = 0;i<n;i++){
			move[i] = cntString(Integer.toBinaryString(i+1),'1');
			step[i] = -1;
		}
		step[0] = 1;
	}
	int cntString(String str,char target){
		int cnt = 0;
		for(char s : str.toCharArray()){
			if(s == target){
				cnt++;
			}
		}
		return cnt;
	}
	void solve(){
		q.add(0);
		int i;
		while(q.size()>0){
			i = q.remove();
			if(i >= 0 && i < n){
				if(i-move[i] >= 0 && i - move[i] < n){
					if(step[i-move[i]]==-1){
						q.add(i-move[i]);
						step[i-move[i]] = step[i] + 1;
					}
				}
				if(i+move[i] >= 0 && i + move[i] < n){
					if(step[i+move[i]]==-1){
						q.add(i+move[i]);
						step[i+move[i]] = step[i] + 1;
					}
				}
			}
		}
		System.out.println(step[n-1]);
	}
}