input: Write a function to determine if a given movie or TV show has subtitles available on any of the specified subtitle sites by checking the provided release paths. The function should return True if subtitles are found for any of the given release paths and engines, else return False. If no release paths are provided, the function should return False.
  assert subtitles_exist(["Movie1.mkv"], ["opensubtitles"], "en")==True
  assert subtitles_exist(["Show1.mkv"], ["subscenter"], "fr")==False
  assert subtitles_exist(["Movie1.mkv", "Show1.mkv"], ["opensubtitles", "subscenter"], "en")==True
  assert subtitles_exist([], ["opensubtitles"], "en")==False
  assert subtitles_exist(["Movie1.mkv"], [], "en")==False
output: def subtitles_exist(release_paths, engines, language):
      if not release_paths or not engines:
          return False
      for path in release_paths:
          if any(engine in path for engine in engines):
              return True
      return False