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 C (GCC 9.2.1) (judge verdict: Accepted)

//M-SOLUTIONS 2020
#include <stdio.h>
int main(){
	int x;
	scanf("%d",&x);
	
	if(x <= 400 || x <600){
		printf("8");
	}
	else if(x <= 600 || x <800){
		printf("7");
	}
	else if(x <= 800 || x <1000){
		printf("6");
	}		
	else if(x <= 1000 || x <1200){
		printf("5");
	}	
	else if(x <= 1200 || x <1400){
		printf("4");
	}	
	else if(x <= 1400 || x <1600){
		printf("3");
	}	
	else if(x <= 1600 || x <1800){
		printf("2");
	}
	else if(x <= 1800 || x <2000){
		printf("1");
	}
	
	return 0;
}