For one interview, they asked for multiple solutions and a comparison between them, leaving little time to get to the end.

At another interview, they initially told me my solution was wrong, stating the problem asked for something else. I asked for clarification, repeated the solution, and asked why it was wrong. They then said it was good. I had time to finish it, but they noted more attention should be given to the candidate.

The manager interview barely had structure.

Five friends go out to eat. A map of who owes what to whom ensures each person pays equally at the end, given their initial payments.