def send_query(nums)
  STDOUT.puts(nums.join(' '))
  STDOUT.flush
  a, b = gets.chomp.split.map(&:to_i)
  if a == 4
    exit 0
  end
  [a, b]
end

excepted_nums = []
nums = [*0..9]
nums.combination(4).each do |list|
  a, b = send_query(list)

  if a + b == 0
    excepted_nums = list.dup
    break
  end
end

cand = []

10.times do |i|
  next if excepted_nums.include?(i)
  excepted_nums[3] = i
  a, b = send_query(excepted_nums)

  if a + b > 0
    cand << i
  end
end

cand.permutation(4).each do |n|
  send_query(n)
end