Apple software engineer on-site interview results

Had an Apple onsite for a software engineering role. Did great in all of the interviews, and all of the problems except one problem. Discussed brute force, which worked, but needed a lot of help/hints to get the optimized solution. What are my chances of still getting an offer? So maybe for roughly like 10 questions, couldn’t solve 1. Did great in both rounds with manager (one behavioral, one design/coding).