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