@a = [9]*4
def get
  puts @a.join(" ")
  STDOUT.flush
  b, c = gets.chomp.split(" ").map &:to_i
  exit if b == 4 && c == 0
  b
end
4.times do |i|
  n = get()
  (0..9).each do |j|
    @a[i] = j
    _n = get()
    break if _n > n
    n = _n
  end
end