gistfile1.rb

def score(dice)
  sum = 0
  count = Hash.new(0)
  dice.each {|die| count[die == 1 ? :"10" : :"#{die}"] += 1}
  count.each {|d, c| sum += d.to_s.to_i * 100 * (c / 3); count[d] = c % 3}
  sum += count[:"10"] * 100 + count[:"5"] * 50
end