package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)

func Scanner() string {
	sc.Scan()
	return sc.Text()
}
func main() {
	buf := make([]byte, 0)
	sc.Buffer(buf, 100000007)
	sc.Split(bufio.ScanWords)
	n, _ := strconv.Atoi(Scanner())

	trans := make(map[int]int)
	fer := []int{1}
	ans := -1

	for i, j := 1, []int{}; len(fer) > 0; i, fer, j = i+1, j, nil {
		for _, k := range fer {
			if k == n {
				ans = i
				j = nil
				break
			} else if trans[k] == 0 {
				trans[k] = 1
				dis := count(k)
				m := k + dis
				l := k - dis
				if m <= n {
					j = append(j, m)
				}
				if l > 0 {
					j = append(j, l)
				}
			}
		}
	}
	fmt.Println(ans)
}

func count(k int) int {
	str := fmt.Sprintf("%b", k)
	c := 0
	for _, s := range str {
		if s == '1' {
			c += 1
		}
	}
	return c
}