Pocket Gems interview questions

Talked with HR, Sent design test. Some very generic questions and then some very specific questions. The questions range from "name games you like" to "explain this system in game X." I received no feedback on the design test, so I can't tell you what they didn't like about it.

It was a Lytmus Challenge, which is like a coding test. Two questions. Q1: given a graph of nodes, like A E A : B C D B : C C : E D : B Find all the paths from start node (A in the example) to end node (E in the ex). Q2: Given an input file, like (11/01/2015-04:00:00) :: START (11/01/2015-04:00:00) :: CONNECTED (11/01/2015-04:30:00) :: DISCONNECTED (11/01/2015-04:45:00) :: CONNECTED (11/01/2015-05:00:00) :: SHUTDOWN Find the portion of connected time.