package main

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

func main() {
    N := InputInt()
    ans := -1
    q := []int{1}
    var r [100001]int
    c := 1
    for len(q) > 0 {
        var l []int
        for _, i := range q {
            if i == N {
                ans = c
                l = nil
                break
            } else if r[i] == 0 {
                r[i] = 1
                b := BinCount(i)
                n, m := i+b, i-b
                if n <= N {
                    l = append(l, n)
                }
                if m > 0 {
                    l = append(l, m)
                }
            }
        }
        q = l
        c += 1
    }
    Print(ans)
}

func Print(x ...interface{}){
    l := len(x) + 1
    for ii, vi := range x {
        fmt.Print(vi)
        if ii == l {
            fmt.Print(" ")
        } else {
            fmt.Print("\n")
        }
    }
}
var sc = bufio.NewScanner(os.Stdin)
func Input() string {
    sc.Scan()
    return sc.Text()
}
func InputInt() int {
    sc.Scan()
    i, e := strconv.Atoi(sc.Text())
    if e != nil {
        panic(e)
    }
    return i
}
func BinCount(x int) int {
    s := fmt.Sprintf("%b", x)
    c := 0
    for _, i := range s {
        if i == '1' {c += 1}
    }
    return c
}