Expectations scale with level:
(Mid-level): Cover the basics. Show you understand trade-offs. It's okay to need hints.
(Senior): Drive the conversation. Proactively discuss trade-offs. Handle follow-ups without stumbling.
+ (Staff): Depth AND breadth. Make decisive recommendations. Consider organizational constraints, not just technical ones.
If you're targeting , you should solve the problem with minimal hints. For , your interviewer should learn something from you.