fun main(args: Array<String>) {
    val x = readLine()!!.toInt()

    println (
    when {
        x < 600 -> 8
        x < 800 -> 7
        x < 1000 -> 6
        x < 1200 -> 5
        x < 1400 -> 4
        x < 1600 -> 3
        x < 1800 -> 2
        else -> 1
    }
    )
}
