788. Rotated Digits

An integer x is a good if after rotating each digit individually by 180 degrees, we get a valid number that is different from x. Each digit must be rotated - we cannot choose to leave it alone. A number is valid if each digit remains a digit after rotation. For example: - 0, 1, and 8 rotate to themselves, - 2 and 5 rotate to each other (in this case they are rotated in a different direction, in