Problem:
Score: 100 points

Problem Statement

M-kun is a competitor in AtCoder, whose highest rating is X.

In this site, a competitor is given a kyu (class) according to his/her highest rating. For ratings from 400 through 1999, the following kyus are given:

From 400 through 599: 8-kyu

From 600 through 799: 7-kyu

From 800 through 999: 6-kyu

From 1000 through 1199: 5-kyu

From 1200 through 1399: 4-kyu

From 1400 through 1599: 3-kyu

From 1600 through 1799: 2-kyu

From 1800 through 1999: 1-kyu

What kyu does M-kun have?

Constraints

400 \leq X \leq 1999

X is an integer.

Input

Input is given from Standard Input in the following format:

X

Output

Print the kyu M-kun has, as an integer.
For example, if he has 8-kyu, print 8.

Sample Input 1

725

Sample Output 1

7

M-kun's highest rating is 725, which corresponds to 7-kyu.

Thus, 7 is the correct output.

Sample Input 2

1600

Sample Output 2

2

M-kun's highest rating is 1600, which corresponds to 2-kyu.

Thus, 2 is the correct output.

Solution in Scala (2.13.1) (judge verdict: Accepted)

object Main {
  def main(args: Array[String]): Unit = {
    val score = scala.io.StdIn.readInt
    var rate  = 0
    if( 400 <= score && score < 600 )         rate = 8
    else if( 600 <= score && score < 800 )    rate = 7
    else if( 800 <= score && score < 1000 )   rate = 6
    else if( 1000 <= score && score < 1200 )  rate = 5
    else if( 1200 <= score && score < 1400 )  rate = 4
    else if( 1400 <= score && score < 1600 )  rate = 3
    else if( 1600 <= score && score < 1800 )  rate = 2
    else if( 1800 <= score && score < 2000 )  rate = 1

    println( rate )
  }
}