X=gets.to_i
if X <= 599
    puts 8
elsif X <= 799
    puts 7
elsif X <= 999
    puts 6
elsif X<= 1199
    puts 5
elsif X<= 1399
    puts 4
elsif X<= 1599
    puts 3
elsif X<= 1799
    puts 2
else
    puts 1
end
