import scala.io.StdIn.readLine
import scala.collection.mutable.Queue

@main
def yuki3(): Unit =
  val N = readLine().split(" ").map(_.toInt).head
  val dist: Array[Int] = Array.ofDim[Int](10001)
  val visited: Array[Boolean] = Array.ofDim[Boolean](10001)
  var q = Queue[Int](1)
  visited(1) = true
  while q.nonEmpty do
    val x = q.dequeue
    var p = 0
    var num = x
    while num != 0 do
      p += num & 1
      num >>= 1
    if x + p <= N && !visited(x + p) then
      visited(x + p) = true
      dist(x + p) = dist(x) + 1
      q.enqueue(x + p)
    if x - p > 0 && !visited(x - p) then
      visited(x - p) = true
      dist(x - p) = dist(x) + 1
      q.enqueue(x - p)
  println(if visited(N) then dist(N) + 1 else -1)