Bentley Systems Software Engineer I interview questions

I met with two gentlemen from Bentley Systems at my university's career fair. They took down my email and sent a link for an online interview. It was a video interview where they asked me to tell them about myself. The 3 minute response was recorded. There was no actual person. They then asked some general questions regarding my GPA and other basic things (This part was written). At then end they asked two programming questions in any language of your choice (15 and 45 mins respectively). The first one was easy but the second one was intentionally hard. They said they just want to see how we think in the second problem. A few days later, I received an email from Bentley Systems asking for my best days for a phone interview. They then sent a phone interview invitation. I am about to give the phone interview in a few hours.