jl2579.rb

# ueeueeuu
# crossum 34

def cross_sum(n)
  return n.to_s.chars.map(&:to_i).reduce(:+)
end

def check_pattern(n)
  check = true
  d1, d2, d3, d4, d5, d6, d7, d8 = n.to_s.split('').map { |digit| digit.to_i }
  if(!d1.odd?) then
    check = false
  end
  if(d2.odd?) then
    check = false
  end
  if(d3.odd?) then
    check = false
  end
  if(!d4.odd?) then
    check = false
  end
  if(d5.odd?) then
    check = false
  end
  if(d6.odd?) then
    check = false
  end
  if(!d7.odd?) then
    check = false
  end
  if(!d8.odd?) then
    check = false
  end
  return check
end  

puts "start"
start = 16599999
ende = 19000000
i = start
until i > ende  do
  if(cross_sum(i) == 34) then
      if (check_pattern(i)) then
      puts i
    end
  end
  i=i+1
end
puts "end"

this is to calculate possible positions of http://www.twitch.tv/jl2579 hint for another pier ;)