n = gets.chomp.to_i
rank = 8
if n >= 400 && n <= 599
  rank = 8
elsif n >= 600 && n <= 799
  rank = 7
elsif n >= 800 && n <= 999
  rank = 6
elsif n >= 1000 && n <= 1199
  rank = 5
elsif n >= 1200 && n <= 1399
  rank = 4
elsif n >= 1400 && n <= 1599
  rank = 3
elsif n >= 1600 && n <= 1799
  rank = 2
elsif n >= 1800 && n <= 1999
  rank = 1
end
puts rank