io = DATA.eof? ? STDIN : DATA
x=io.gets.to_i
if x>=1800
 puts 1
elsif x>=1600
  puts 2
elsif x>=1400
  puts 3
elsif x>=1200
  puts 4
elsif x>=1000
  puts 5
elsif x>=800
  puts 6
elsif x>=600
  puts 7
elsif x>=400
  puts 8
end
__END__
