import java.io.BufferedReader
import java.io.InputStream
import java.io.InputStreamReader
import java.io.PrintWriter
import java.util.*

fun PrintWriter.solve(sc: FastScanner) {
    val n = sc.nextInt()
    if (n in 400..599) {
        println(8)
    } else if (n in 600..799) {
        println(7)
    } else if (n in 800..999) {
        println(6)
    } else if (n in 1000..1199) {
        println(5)
    } else if (n in 1200..1399) {
        println(4)
    } else if (n in 1400..1599) {
        println(3)
    } else if (n in 1600..1799) {
        println(2)
    } else {
        println(1)
    }
}

fun main() {
    val writer = PrintWriter(System.out, false)
    writer.solve(FastScanner(System.`in`))
    writer.flush()
}

class FastScanner(s: InputStream) {
    private var st = StringTokenizer("")
    private val br = BufferedReader(InputStreamReader(s))

    fun next(): String {
        while (!st.hasMoreTokens()) st = StringTokenizer(br.readLine())

        return st.nextToken()
    }

    fun nextInt() = next().toInt()
    fun nextLong() = next().toLong()
    fun nextLine() = br.readLine()
    fun nextDouble() = next().toDouble()
    fun ready() = br.ready()
}
