# frozen_string_literal: true

def opponent(name)
  if name == 'oda'
    'yukiko'
  else
    'oda'
  end
end

s = gets.chomp
blank = 0
8.times do
  b = gets.chomp.chars.select { |c| c == '.' }.size
  blank += b
end
if blank.even?
  puts s
else
  puts(opponent(s))
end