Uber Software Development Engineer interview questions

It consisted of 3 rounds but I was eliminated in round 1. The question is a twist on the concept of graphs. I gave the interviewer the logic but was unable to code it.

There was one questions related to graphs (strongly connected component), one from DP and third one of simple maths(Base conversion). Interview was of medium difficulty level. Brush up your basic DS along with special focus on graphs and DP.