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: Wrong Answer)

rate=int(input())
a,b,c,d,e,f,g,h=400,600,800,100,1200,1400,1600,1800

if rate>=a and rate<=a+199:
  print(8)

elif rate>=b and b+199>=rate:
  print(7)
elif rate>=c and c+199>=rate:
  print(6)
  
elif rate>=d and d+199>=rate:
  print(5)
  
elif rate>=e and e+199>=rate:
  print(4)
  
elif rate>=f and f+199>=rate:
  print(3)
  
elif rate>=g and g+199>=rate:
  print(2)
  
  
elif rate>=h and h+199>=rate:
  print(1)