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 Go (1.14.1) (judge verdict: Accepted)

package main
 
import "fmt"
 
func judge(rate int) int {
	if 400 <= rate && rate <= 599 {
		return 8
	} else if 600 <= rate && rate <= 799 {
		return 7
	} else if 800 <= rate && rate <= 999 {
		return 6
	} else if 1000 <= rate && rate <= 1199 {
		return 5
	} else if 1200 <= rate && rate <= 1399 {
		return 4
	} else if 1400 <= rate && rate <= 1599 {
		return 3
	} else if 1600 <= rate && rate <= 1799 {
		return 2
	//} else if 1800 <= rate <= 1999 {
	//	return 1
	} else {
		return 1
	}
	return 0
}
 
func main() {
	var rate int //ここで明示的に型を宣言している
	fmt.Scan(&rate) //rateはX整数で入力される
	ans := judge(rate)
	fmt.Println(ans)
}