Problems from 2013 University of Chicago Invitational Programming Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
3D Printer	1082	173	16%	0.00	467	132	28%	8.9
Automatic Trading	1359	412	30%	0.03	333	233	70%	5.3
Can of Worms	643	144	22%	0.04	157	106	68%	7.8
Flooding Fields	332	82	25%	0.02	83	64	77%	7.7
Goat Ropes	201	90	45%	0.00	76	53	70%	7.3
Job Postings	253	113	45%	0.01	85	72	85%	5.9
Overlapping Maps	212	111	52%	0.00	94	83	88%	5.2
Satisfaction Guaranteed	696	88	13%	6.78	40	13	32%	9.5
Uniform Subtrees	129	47	36%	0.23	30	24	80%	6.4
Unreal Estate	360	97	27%	0.01	67	46	69%	6.7
Winter Roads	355	36	10%	0.18	54	21	39%	8.9