fun main(args: Array<String>) {
    val t = readLine()!!.toInt()
    if (t in 400..599) {
    	println(8)
    } else if (t in 600..799) {
      	println(7)
    } else if (t in 800..999) {
      	println(6)
    } else if (t in 1000..1199) {
      	println(5)
    } else if (t in 1200..1399) {
      	println(4)
    } else if (t in 1400..1599) {
      	println(3)
    } else if (t in 1600..1799) {
      	println(2)
    } else {
    	println(1)
    }
}