sente = gets.chomp
if sente == "oda"
  gote = "yukiko"
else
  gote = "oda"
end
count = 0
8.times do
  gets.each_char do |ch|
    if ch == "."
      count += 1
    end
  end
end
if count.even?
  puts sente
else
  puts gote
end