I was invited to the HackerRank interviewing platform. I video-chatted with the interviewer, which helped because I actually got to see his facial expressions, etc.

He asked me about my past work experience, my proudest achievement, an engineering difficulty I've overcome, and what my interests are. He also explained the dynamics of the engineering team.

Given a list and an integer k, find out three elements that add up to k. The three elements must be unique, but the list may not be.