object Main extends App {
  val x =  scala.io.StdIn.readInt()

  if (x <= 599) {
    println(8)
  } else if (x <= 799) {
    println(7)
  } else if (x <= 999) {
    println(6)
  } else if (x <= 1199) {
    println(5)
  } else if (x <= 1399) {
    println(4)
  } else if (x <= 1599) {
    println(3)
  } else if (x <= 1799) {
    println(2)
  } else {
    println(1)
  }
}
