def try(arr)
  $stdout.puts arr.join(' ')
  $stdout.flush
  x, y = gets.split.map(&:to_i)
  [x, y]
end

fst = 0

[2, 4, 6, 8].each do |i|
  fst += try([0, 1, i, i + 1]).reduce(:+)
end

if fst == 4
  nums = []
elsif fst == 7
  nums = []
  fb1 = try([0, 2, 3, 4]).reduce(:+)
  fb2 = try([1, 2, 3, 4]).reduce(:+)
  if fb2 > fb1
    nums.push(1)
  elsif fb2 < fb1
    nums.push(0)
  end
elsif fst == 10
  nums = [0, 1]
end

sets = [[2, 3], [4, 5], [6, 7], [8, 9]]

4.times do |i|
  arr = [2, 4, 6, 8]
  fb1 = try(arr).reduce(:+)
  arr[i] = sets[i][1]
  fb2 = try(arr).reduce(:+)
  if fb2 > fb1
    nums.push(sets[i][1])
  elsif fb2 < fb1
    nums.push(sets[i][0])
  end
end

nums.permutation(4).each do |arr|
  res = try(arr)
  if res == [4, 0]
    break
    exit 0
  end
end