Problems from 2013 University of Chicago Invitational Programming Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
3D Printer	501	107	21%	0.00	188	85	45%	7.9
Automatic Trading	733	209	29%	0.03	191	125	65%	5.2
Can of Worms	360	73	20%	0.05	78	51	65%	4.2
Flooding Fields	128	26	20%	0.02	34	24	71%	6.8
Goat Ropes	121	55	45%	0.00	40	28	70%	7.2
Job Postings	133	44	33%	0.01	37	30	81%	5.3
Overlapping Maps	133	75	56%	0.00	61	55	90%	4.9
Satisfaction Guaranteed	119	11	9%	6.78	14	5	36%	9.2
Uniform Subtrees	49	12	24%	0.52	16	12	75%	7.0
Unreal Estate	163	36	22%	0.01	32	21	66%	7.0
Winter Roads	70	10	14%	0.40	16	9	56%	7.5