numbers = Array.new(10, 0)

def query(x)
  STDOUT.puts(x)
  STDOUT.flush
  res = gets.chomp.split
  [res[0].to_i, res[1]]
end

10.times do |i|
  max_v = 0
  num = -1

  10.times do |n|
    numbers[i] = n
    v, status = query(numbers.join)

    if status == 'unlocked'
      exit
    end

    if max_v < v
      max_v = v
      num = n
    end
  end

  numbers[i] = num
end