I worked for two big-4 in the 2000s and think these puzzles are bad and often serve to make the interviewer look smarter. I never had to do one when I got hired and I doubt I'd pass one now. Don't question your intelligence based on those. See discussion in https://news.ycombinator.com/item?id=11001259 and maybe https://medium.com/@RobertYau/why-phone-screens-for-hiring-a...

When was the last time you had holiday? This might include days away from your family to get in an extra calm environment. I'm asking because I had US-collegues who didn't take a day of holiday in 5 years. And collegues who quit because they were burned out. All in the name of meeting deadlines or pleasing the next manager. Time off is important.