import math, strscans

let
  (_, a, b, c) = stdin.readLine.scanTuple "$f $f $f"
  val = b^2 - 4.0 * a * c

proc x1: float = (-b - sqrt val) / 2 / a
proc x2: float = (-b + sqrt val) / 2 / a

echo:
  if val < 0:
    "imaginary"
  elif val == 0:
    $x1()
  elif x1 < x2:
    $x1() & " " & $x2()
  else:
    $x2() & " " & $x1()