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: Runtime Error)


public class Main{
public static void main(String[] args){
  int num = Integer.parseInt(args[0]);
  if(num >= 2000){ 
  }else if(num >= 1800){
    System.out.println("1");
  }else if(num >= 1600){
    System.out.println("2");
  }else if(num >= 1400){
    System.out.println("3");
  }else if(num >= 1200){
    System.out.println("4");
  }else if(num >= 1000){
    System.out.println("5");
  }else if(num >= 800){
    System.out.println("6");
  }else if(num >= 600){
    System.out.println("7");
  }else if(num >= 400){
    System.out.println("8");
  }
}
}