object Main {
  def main(args: Array[String]): Unit = {
    import scala.io.StdIn.readLine
    val Array(datN) = readLine.split(" ").map(_.toInt)

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