object Main extends App {
  val sc = new java.util.Scanner(System.in)
  var n = sc.nextInt()
  if(n >= 400 & n <= 599){println(8)}
  if(n >= 600 & n <= 799){println(7)}
  if(n >= 800 & n <= 999){println(6)}
  if(n >= 1000 & n <= 1199){println(5)}
  if(n >= 1200 & n <= 1399){println(4)}
  if(n >= 1400 & n <= 1599){println(3)}
  if(n >= 1600 & n <= 1799){println(2)}
  if(n >= 1800 & n <= 1999){println(1)}
}
