Problems from 2012 University of Chicago Invitational Programming Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
CosmoCraft	32	14	44%	0.04	16	12	75%	6.2
Covered Walkway	1666	496	30%	0.04	414	317	77%	4.2
Double Dealing	240	83	35%	0.12	87	67	77%	6.2
Estimation	297	114	38%	0.16	105	88	84%	5.4
Juggler	179	81	45%	0.01	79	66	84%	6.5
Red/Blue Spanning Tree	465	152	33%	0.01	151	117	77%	5.3
Science!	277	73	26%	0.01	83	52	63%	8.0
The End of the World	155	86	55%	0.00	72	64	89%	4.4
The Red Gem	127	34	27%	0.01	33	27	82%	6.8
The Worm in the Apple	43	26	60%	0.12	16	15	94%	4.8