Sometimes, a hint is all it takes to answer a question. So if the person asking selects that question and no full answer was provided, should the "asker" edit the original post with a full solution?
If an answer is already selected and the "asker" already solved the problem, there's no point for someone else to want to post a full solution, but what if the hint is not enough for someone else? If that someone has the same question, asking it would be a duplicate.
How can this be solved?