Problems from 2013 University of Chicago Invitational Programming Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
3D Printer	1005	164	16%	0.00	419	126	30%	8.9
Automatic Trading	1293	396	31%	0.03	321	224	70%	5.1
Can of Worms	631	137	22%	0.04	153	100	65%	7.7
Flooding Fields	327	80	24%	0.02	80	62	78%	7.6
Goat Ropes	199	89	45%	0.00	75	53	71%	6.9
Job Postings	253	113	45%	0.01	85	72	85%	5.5
Overlapping Maps	205	108	53%	0.00	91	81	89%	4.9
Satisfaction Guaranteed	602	84	14%	6.78	36	11	31%	9.6
Uniform Subtrees	129	47	36%	0.23	30	24	80%	6.3
Unreal Estate	328	92	28%	0.01	66	44	67%	7.7
Winter Roads	348	36	10%	0.18	53	21	40%	8.8