output_description: Print the kyu M-kun has, as an integer. For example, if he has 8-kyu, print
  `8`.
  
  * * *
input_description: Input is given from Standard Input in the following format:
  
      
      
      X
attempt: def main():
      mtx = [
          400,
          599,
          8,
          600,
          799,
          7,
          800,
          999,
          6,
          1000,
          1199,
          5,
          1200,
          1399,
          4,
          1400,
          1599,
          3,
          1600,
          1799,
          2,
          1800,
          1999,
          1,
      ]
      X = int(input())
      for i in range(0, len(mtx), 3):
          lo = mtx[i]
          hi = mtx[i + 1]
          ans = mtx[i + 2]
          if lo <= X <= hi:
              print(ans)
  
  
  if __name__ == "__main__":
      import sys
  
      sys.setrecursionlimit(10000)
      main()
  
problem_description: 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?
samples: [{"input": "725", "output": "7\n    \n\nM-kun's highest rating is 725, which corresponds to 7-kyu.  \nThus, `7` is the correct output.\n\n* * *"}, {"input": "1600", "output": "2\n    \n\nM-kun's highest rating is 1600, which corresponds to 2-kyu.  \nThus, `2` is the correct output."}]