I got hired for one of the tasks, but I'm not sure how to proceed with it. There's nowhere on the task to type a response, and the email I got about being hired just links to the task.
I've run into a few problems like this. The simplest solution exploits the property that there is an ordering on the states, so each "later" state can depend only on "earlier" states or itself. A more general EV problem would require Gaussian elimination instead of DP. Fun stuff, all in all.