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%	6.4
Covered Walkway	1788	532	30%	0.04	446	340	76%	4.4
Double Dealing	242	84	35%	0.12	89	68	76%	6.7
Estimation	303	115	38%	0.16	107	89	83%	5.7
Juggler	246	107	43%	0.01	101	86	85%	5.4
Red/Blue Spanning Tree	518	172	33%	0.01	165	127	77%	5.7
Science!	306	77	25%	0.01	86	55	64%	7.4
The End of the World	160	89	56%	0.00	74	66	89%	4.2
The Red Gem	144	40	28%	0.01	38	31	82%	6.6
The Worm in the Apple	44	27	61%	0.12	17	16	94%	4.9