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 Java (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.io.*;
class Main
{
  public static void main(String args[])throws IOException
  {
    BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
    int x=Integer.parseInt(br.readLine());
    if(x>=400 && x<600)
      System.out.println("8");
    else if(x>=600 && x<800)
      System.out.println("7"); 
      else if(x>=800 && x<1000)
      System.out.println("6") ;
        else if(x>=1000 && x<1200)
      System.out.println("5");
      else if(x>=1200 && x<1400)
      System.out.println("4"); 
     else if(x>=1400 && x<1600)
      System.out.println("3"); 
      else if(x>=1600 && x<1800)
      System.out.println("2") ;
        else if(x>=1800 && x<2000)
      System.out.println("1");
  }
}