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?
number = int(input())
if number in range(400, 599):
  print('8')


number = int(input())
if number in range(400, 600):
    print('8')
elif number in range(600, 800):
    print('7')
elif number in range(800, 1000):
    print('6')
elif number in range(1000, 1200):
    print('5')
elif number in range(1200, 1400):
    print('4')
elif number in range(1400, 1600):
    print('3')
elif number in range(1600, 1800):
    print('2')
elif number in range(1800, 2000):
    print('1')