NUMBER_OF_QUESTIONS = gets.to_i
number_array = []
(0..9).each do |i|
  number_array[i] = 0
end

NUMBER_OF_QUESTIONS.times do
  get_string = gets
  numbers = get_string[0, 7].split.map(&:to_i).to_a
  inside_answer = get_string.split.last == 'YES' ? 1 : -1
  numbers.each do |number|
    number_array[number] += inside_answer
  end
end

puts number_array.index(number_array.max_by { |num| num })