Problems from Nordic Collegiate Programming Contest (NCPC) 2011

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Car Trouble	202	64	32%	0.00	65	58	89%	4.4
Death Knight Hero	3377	1798	53%	0.00	1703	1610	95%	1.5
Elevator Trouble	979	298	30%	0.00	264	227	86%	3.5
Enemy Division	169	60	36%	0.03	53	45	85%	5.2
Knigs of the Forest	344	106	31%	0.03	102	88	86%	4.6
ls	563	177	31%	0.00	182	140	77%	5.0
Mega Inversions	1059	437	41%	0.01	337	284	84%	4.9
Prime Time	60	28	47%	0.00	29	23	79%	6.0
Private Space	148	19	13%	0.00	26	16	62%	6.8
Robots on a Grid	596	187	31%	0.02	138	117	85%	4.3