M = 1000000000

def get(x, y)

  x = [M, [0, x].max].min
  y = [M, [0, y].max].min

  puts "#{x} #{y}"
  STDOUT.flush
  d = gets.to_i
  return d
end

d0 = get(0, 0)
d1 = get(M, 0)

x = (M + d0 - d1) / 2
y = (d0 + d1 - M) / 2
get(x, y)