n = gets.to_i
s = 8
if n < 600
  s = 8
elsif n < 800
  s = 7
elsif n < 1000
  s = 6
elsif n < 1200
  s = 5
elsif n < 1400
  s = 4
elsif n < 1600
  s = 3
elsif n < 1800
  s = 2
else
  s = 1
end
puts s
 