I have my fb interviews in 3 weeks and totally freaking out. I was a summer intern at LI and didn't touch leetcode the entire summer. I hear this year they plan to hire a lot of new grads. Any pointers on how to prep in such a short span?
postpone it
Focus lots on DP and backtracking (and trees maybe)
I believe they specifically avoid DP because it doesn't provide good signal on whether someone is going to be good on the job. I wouldn't worry about that sort of stuff too much if I were OP. The Leetcode premium FB list is very accurate from what I've heard.
Their internal interview training says to not ask DP, but their interviewers are allowed to ask whatever they want so some still do.
I'm in the same boat. Good luck man!