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

class Main3 {
	
	static int max;
	static int[] minPass;
	
	public static void getPass (int i, int pass) {
		if (i <= 0 || max <= i) return;
		if (minPass[i] != -1 && minPass[i] <= pass) return;
		
		minPass[i] = pass;
		int b = Integer.bitCount(i);
		getPass(i - b, pass + 1);
		getPass(i + b, pass + 1);
	}
	
	public static void main (String[] args) throws IOException {
		BufferedReader br = 
			new BufferedReader(new InputStreamReader(System.in));
		
		int n = Integer.parseInt(br.readLine());
		max = n + 1;
		minPass = new int[max];
		Arrays.fill(minPass , -1);
		
		getPass(1, 1);
		
		System.out.println(minPass[n]);
		
	}
}