Two Sigma Quantitative Software Engineer interview questions

Two Sigma begins by offering an online coding interview consisting of two questions. The first requires less coding knowledge but probes one's ability to think algorithmically. The second was about data science. We were given three hours to complete it.

vitural onsite interview took 3 hours, speaking with three people seperately. most of the questions are open-ended. and then hr noticed that result of the interview. should've communicated more during the interview