class Array
  # being_deleted must be sorted
  def delete_ats(being_deleted)
    tmp = []
    current = 0
    self.each_with_index do |a, i|
      if being_deleted[current] == i
        current += 1
      else
        tmp << a
      end
    end
    self.replace(tmp)
  end
end

s = gets.chomp.chars
(0..s.size).each do |from|
  (0..s.size - from).each do |length|
    copy = Marshal.load(Marshal.dump(s))
    copy.delete_ats((from...from + length).to_a)
    if copy.join == "keyence"
      puts "YES"
      exit
    end
  end
end
puts "NO"
