@a = [9]*10
def get
  puts @a.join
  STDOUT.flush
  n, state = gets.chomp.split(" ")
  exit if state == "unlocked"
  n.to_i
end
10.times do |i|
  n = get()
  (0..9).each do |j|
    @a[i] = j
    _n = get()
    break if _n > n
  end
end