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

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner();
        int n = sc.nextInt();
        int[] counts = new int[n + 1];
        Arrays.fill(counts, -1);
        PriorityQueue<Path> queue = new PriorityQueue<>();
        queue.add(new Path(1, 1));
        while (queue.size() > 0) {
            Path p = queue.poll();
            if (p.idx <= 0 || p.idx > n || counts[p.idx] != -1) {
                continue;
            }
            counts[p.idx] = p.value;
            int pop = getPop(p.idx);
            queue.add(new Path(p.idx + pop, p.value + 1));
            queue.add(new Path(p.idx - pop, p.value + 1));
        }
        System.out.println(counts[n]);
    }
    
    static int getPop(int x) {
        int pop = 0;
        while (x > 0) {
            pop += x % 2;
            x >>= 1;
        }
        return pop;
    }
    
    static class Path implements Comparable<Path> {
        int idx;
        int value;
        
        public Path(int idx, int value) {
            this.idx = idx;
            this.value = value;
        }
        
        public int compareTo(Path another) {
            return value - another.value;
        }
    }
}
class Scanner {
    BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    StringTokenizer st = new StringTokenizer("");
    
    public Scanner() throws Exception {
        
    }
    
    public int nextInt() throws Exception {
        return Integer.parseInt(next());
    }
    
    public long nextLong() throws Exception {
        return Long.parseLong(next());
    }
    
    public double nextDouble() throws Exception {
        return Double.parseDouble(next());
    }
    
    public String next() throws Exception {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(br.readLine());
        }
        return st.nextToken();
    }
}