Meta Software Engineer New Grad interview questions

Was reached out to by a recruiter via email. The recruiter included information about working at Facebook. The first interview was a phone interview with two Leetcode hard difficulty questions. The interviewer slightly twisted the questions after I solved them. Heard back within a couple of days and was invited to an onsite University Day. The onsite experience was amazing. The recruiters are really great at what they do. Had three interviews which all contained coding questions. Two of the interviews were purely technical. One was 3/4 behavioral, 1/4 technical. All technical interviews started with a medium difficulty question, then a harder question. Most of the questions I had not heard of before. I was extremely impressed by the culture, values, office, perks, etc. After interviewing with other "big-4" companies, this was my favorite. You can really tell that the engineers (from at least what I saw) at Facebook are pretty brilliant. They all emphasized to not fall into impostor syndrome.