#!/usr/bin/env ruby
require 'csv'

def flip; rand(2) == 1; end

headers = ['year', '# male pres', '# female pres']
rows = []
250.times do |j|
  years = 2016
  men, women = 44, 0
  balanced = false
  i = 0

  while !balanced && years < 9_000_000 do
    i += 1
    if flip # is woman?
      women += 1
    else
      men += 1
    end

    if flip # is two-term?
      years += 8
    else
      years += 4
    end

    if women > men
      balanced = true
    end
  end

  rows << [years, men, women]
end

rows.sort! { |a,b| a.first <=> b.first }
csv = CSV.generate do |csv|
  csv << headers
  rows.each { |row| csv << row }
end
print csv

avg = rows.inject(0) { |total,row| total += row.first } / 50
puts "Average: #{avg}"