I can relate to this situation. I've been interviewing since June, and the only times I've advanced to the next round were those where I made no mistakes at all

I can relate to this situation. I've been interviewing since June, and the only times I've advanced to the next round were those where I made no mistakes at all. In the past, you could complete 90% of the task and explain the rest, which would hint to them that you know what you're doing. However, today's scenario is quite different. Now, you are expected not only to provide a complete solution but also to present it in the most currently accepted way.