object Main extends App {
  val sc = new java.util.Scanner(System.in)
  val rate = sc.nextInt() match {
    case i if i < 600 => 8
    case i if i < 800 => 7
    case i if i < 1000 => 6
    case i if i < 1200 => 5
    case i if i < 1400 => 4
    case i if i < 1600 => 3
    case i if i < 1800 => 2
    case _ => 1
  }
  println(rate)
}
