n = gets.chomp.to_i
numbers = Array.new(10, 0)
n.times do
  turn = gets.chomp.split(" ")
  r = turn.pop
  abcd = turn.map(&:to_i)
  abcd.each do |i|
    if r == "NO"
      numbers[i] -= 1
    else
      numbers[i] += 1
    end
  end
end
puts numbers.index(numbers.max)