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 11.0.6) (judge verdict: Accepted)

import java.util.Scanner;

class Main {
    static int calc(int a) {
    int num =0;
        if(400<=a&&a<=599){
            num=8;
        }else if(600<=a&&a<=799) {
            num=7;
        }else if(800<=a&&a<=999) {
            num=6;
        }else if(1000<=a&&a<=1199) {
            num=5;
        }else if(1200<=a&&a<=1399) {
            num=4;
        }else if(1400<=a&&a<=1599) {
            num=3;
        }else if(1600<=a&&a<=1799) {
            num=2;
        }else if(1800<=a&&a<=1999) {
            num=1;
        }
        System.out.println(num);
        return num;

   }

   public static void main(String[] args) {
    Scanner stdIn = new Scanner(System.in);
    int a = stdIn.nextInt();
    calc(a);

   }

}