object Main {
  def main(args: Array[String]): Unit = {
    val score = scala.io.StdIn.readInt
    var rate  = 0
    if( 400 <= score && score < 600 )         rate = 8
    else if( 600 <= score && score < 800 )    rate = 7
    else if( 800 <= score && score < 1000 )   rate = 6
    else if( 1000 <= score && score < 1200 )  rate = 5
    else if( 1200 <= score && score < 1400 )  rate = 4
    else if( 1400 <= score && score < 1600 )  rate = 3
    else if( 1600 <= score && score < 1800 )  rate = 2
    else if( 1800 <= score && score < 2000 )  rate = 1

    println( rate )
  }
}