I felt the morning session was challenging (especially the first ten problems) I finished the morning session with an hour and 15 to spare and went through every question a second time. The afternoon session required a lot of stamina. I had to keep pushing real hard and the last 6 or 7 questions were surprisingly easy of which I was happy about because my brain was real tired at that point. I finished the afternoon session with 30 minutes to spare.
Do you go to the type of problems you feel strong in and work them then continue by topic? Or do you just start and work your way through?