package main

import . "fmt"

var m = make(map[int]int)

func f(c, n int) {
	if cc, ok := m[n]; !ok || c < cc {
		m[n] = c
	}
	for i:=1; i<=n ;i++ {
		if c < 10 && n+i <20 {
			f(c+1,n+i)
		}
	}
}

func show20() {
	f(0, 1)
	for v,c := range m {
		Printf("v=%d (%b), c=%d\n", v,v,c)
	}
}

func main() {
	var n int
	Scan(&n)
	var x, c int
	x = 1
	for x * 2  <= n {
		x *= 2
		c++
	}
	d := n - x
	if d != 0 {
		x -= d
		x += (d * 2)
		c++
	}
	if x != n {
		panic("bug?")
	}
	Println(c)
}