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 Python (3.8.2) (judge verdict: Accepted)

# coding: utf-8

# 識別する関数
def func(num):
    num = int(num)
    if 400 <= num and num <= 599:
        return 8
    elif 600 <= num and num <= 799:
        return 7
    elif 800 <= num and num <= 999:
        return 6
    elif 1000 <= num and num <= 1199:
        return 5
    elif 1200 <= num and num <= 1399:
        return 4
    elif 1400 <= num and num <= 1599:
        return 3
    elif 1600 <= num and num <= 1799:
        return 2
    else:
        return 1


if __name__ == "__main__":
    num = input()
    print(func(num))