score = gets.to_i
level = 0
if score >= 1800
  level = 1
elsif score >= 1600
  level = 2
elsif score >= 1400
  level = 3
elsif score >= 1200
  level = 4
elsif score >= 1000
  level = 5
elsif score >= 800
  level = 6
elsif score >= 600
  level = 7
elsif score >= 400
  level = 8
end

puts level
