n = gets.to_i
an = [*0..9]
ay = [*0..9]
n.times{
  w = gets.split
  if w[4]=="YES"
    ay &= w[0..3].map{|t|t.to_i}
  else
    w[0..3].map{|t|an.delete(t.to_i)}
  end
}

ay.each{|t|
  if an.index(t)
    p t
  end
}