private fun readLn() = readLine()!!
private fun readStrings() = readLn().split(" ")
private fun readInt() = readLn().toInt()
private fun readInts() = readStrings().map { it.toInt() }
private fun readLong() = readLn().toLong()
private fun readLongs() = readStrings().map { it.toLong() }
private fun readDouble() = readLn().toDouble()
private fun readDoubles() = readStrings().map { it.toDouble() }

fun main(args: Array<String>) {
    val n=readInt()
    if(n>=400&&n<=599){
        println(8)
    }else if(n>=600&&n<=799){
        println(7)
    }
    else if(n>=800&&n<=999){
        println(6)
    }else if(n>=1000&&n<=1199){
        println(5)
    }else if(n>=600&&n<=1399){
        println(4)
    }else if(n>=1400&&n<=1599){
        println(3)
    }
    else if(n>=1600&&n<=1799){
        println(2)
    }else if(n>=1800&&n<=1999){
        println(1)
    }
}