def try(left, right)
  mid1 = (left * 2 + right) / 3
  mid2 = (left + 2 * right) / 3
  STDOUT.puts "0 #{mid1}"
  STDOUT.flush
  d1 = STDIN.gets.to_i
  STDOUT.puts "0 #{mid2}"
  STDOUT.flush
  d2 = STDIN.gets.to_i
  if d2 < d1
    [mid1, right]
  else
    [left, mid2]
  end
end
def try2(left, right)
  mid1 = (left * 2 + right) / 3
  mid2 = (left + 2 * right) / 3
  STDOUT.puts "#{mid1} #{Y}"
  STDOUT.flush
  d1 = STDIN.gets.to_i
  STDOUT.puts "#{mid2} #{Y}"
  STDOUT.flush
  d2 = STDIN.gets.to_i
  if d2 < d1
    [mid1, right]
  else
    [left, mid2]
  end
end
left, right = -1, 10 ** 5 + 1
40.times do |i|
  left, right = try(left, right)
  STDERR.puts "#{left} #{right}"
end
Y = (left + right) / 2
STDOUT.puts "0 #{Y}"
STDOUT.flush
x = STDIN.gets.to_i
STDOUT.puts "#{x} #{Y}"
STDOUT.flush