let x = Int(readLine()!)!

switch x {
  case 400..<600:
  	print("8")
  case 600..<800:
    print("7")
  case 800..<1000:
    print("6")
  case 1000..<1200:
    print("5")
  case 1200..<1400:
    print("4")
  case 1400..<1600:
    print("3")
  case 1600..<1800:
    print("2")
  case 1800..<2000:
    print("1")
  default:()
}