So what is the maximum time limit then? (for the “Total Execution Time” displayed for each submission).
Is it 8 hours = 28800 seconds?
Or is it 10 hours = 36000 seconds ?
My latest submission shows a Total Execution Time of 28845 seconds (so only 45 seconds more than 8 hours). Should I try to optimize its runtime? (or just submit again and hope I’m luckier next time?)
Or, in fact, can I use all the way up to 36000 seconds, in which case, I could really use this extra time 
Also, it would be nice to have the maximum runtime enforced. Disqualifying some submissions later on is quite bad. Anyway, in my case this is the 1st submission which exceeded an 8 hour “Total Execution Time”, so a decision here would be welcome.