input: Write a python function to classify strings into "short" and "long" based on their length.
  assert classify_strings(["hello", "world", "this is a test", "short", "a very very long string"]) == {"short": ["hello", "world", "short"], "long": ["this is a test", "a very very long string"]}
  assert classify_strings(["tiny", "small", "average", "extraordinarily large"]) == {"short": ["tiny", "small"], "long": ["average", "extraordinarily large"]}
  assert classify_strings(["shorty", "mini", "gigantic", "colossal"]) == {"short": ["shorty", "mini"], "long": ["gigantic", "colossal"]}
output: def classify_strings(strings):
      result = {"short": [], "long": []}
      for string in strings:
          if len(string) <= 5:
              result["short"].append(string)
          else:
              result["long"].append(string)
      return result