import scala.io.StdIn.readLine
import scala.collection.mutable.PriorityQueue
import scala.annotation.tailrec


object Main {
  def solve(n : Long) : Int = {
    val fermat_numbers = List[Long](3, 5, 17, 257, 65537)
    def big(c : Set[Long],k : Long) : Set[Long] = {
      c.withFilter(_*k <= n).map(_*k) ++ c
    }
    val init = (0l to Math.ceil(Math.log(n)/Math.log(2)).toLong).
                 map((k) => Math.round(Math.pow(2,k)).toLong).toSet
    val drawables_in_n = fermat_numbers.foldLeft(init)(big(_,_)).filter((i) => 3 <= i && i <= n)
    drawables_in_n.size
  }
  def main(args : Array[String]) : Unit = {
    val n = readLine().toLong
    println(solve(n))
  }
}