class CephalopodMath
  attr_reader :worksheet
  def initialize(worksheet)
    @worksheet = worksheet
  end

  def self.for(input)
    new input
  end

  def wide_columns
    worksheet.split("\n").map(&:split).transpose
  end

  def wide_column_answers
    wide_columns.map{ |column| column[..-2].map(&:to_i).reduce(&(column[-1]).to_sym) }
  end
end