x = gets.to_i

if x <= 599 then
	puts 8
elsif x <= 799 then
	puts 7
elsif x <= 999 then
	puts 6
elsif x <= 1199 then
	puts 5
elsif x <= 1399 then
	puts 4
elsif x <= 1599 then
	puts 3
elsif x <= 1799 then
	puts 2
elsif x <= 1999 then
	puts 1
end

