import java.util.Scanner

object Main extends App {
  val sc = new Scanner(System.in)
  val X = sc.nextInt

  val z =
    if (X >= 400 && X <= 599) 8
    else if (X >= 600 && X <= 799) 7
    else if (X >= 800 && X <= 999) 6
    else if (X >= 1000 && X <= 1199) 5
    else if (X >= 1200 && X <= 1399) 4
    else if (X >= 1400 && X <= 1599) 3
    else if (X >= 1600 && X <= 1799) 2
    else 1
  println(z)
}
