# -*- coding: utf-8 -*-
# http://odz.sakura.ne.jp/projecteuler/index.php?cmd=read&page=Problem%2017
#
# なにも考えずに..
S1 = %w(. one two three four five six seven eight nine)
S10 = %w(ten eleven twelve thirteen fourteen fifteen sixteen seventeen eighteen nineteen)
S99 = %w(. . twenty thirty forty fifty sixty seventy eighty ninety)
def num_english(n)
  if (n < 10) 
    S1[n]
  elsif (n < 20) 
    S10[n % 10]
  elsif (n < 100) 
    if (n % 10 == 0) 
      S99[n / 10]
    else
      S99[n / 10] + '-' + num_english(n % 10)
    end
  elsif (n < 1000) 
    if (n % 100 == 0) 
      num_english(n / 100) + ' hundred'
    else
      S1[n / 100] + ' hundred and ' + num_english(n % 100)
    end
  elsif (n == 1000)
    "one thousand"
  end
end
puts (1 .. 1000).reduce(0) {|sum, i|sum + num_english(i).gsub(/[\s-]+/,'').size }