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