And I understand the upper time limit for each question was 4.5 hours. So it solved one question almost immediately, two well over the allotted time (60 hrs), and two not at all. No medal for you, Grasshopper.
That said, the gap from "can't do it at all" to "can do it in 60 hours" is probably quite a bit larger than the gap from 60 hours to 1.5 hours.