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)

#include <stdio.h>
int main(void){
    // Your code here!
    int n;
    scanf("%d", &n);
    n /= 100;
    switch(n){
        case 4:
        case 5:
            printf("8\n");
            break;
        case 6:
        case 7:
            printf("7\n");
            break;
        case 8:
        case 9:
            printf("6\n");
            break;
        case 10:
        case 11:
            printf("5\n");
            break;
        case 12:
        case 13:
            printf("4\n");
            break;
        case 14:
        case 15:
            printf("3\n");
            break;
        case 16:
        case 17:
            printf("2\n");
            break;
        case 18:
        case 19:
            printf("1\n");
            break;
    }
}