Problems from Nordic Collegiate Programming Contest (NCPC) 2011

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Car Trouble	262	84	32%	0.00	86	76	88%	4.4
Death Knight Hero	4057	2143	53%	0.00	2045	1929	94%	1.5
Elevator Trouble	1188	376	32%	0.00	320	275	86%	3.5
Enemy Division	196	73	37%	0.03	60	52	87%	4.5
Knigs of the Forest	995	236	24%	0.03	197	172	87%	3.6
ls	730	227	31%	0.00	225	172	76%	5.2
Mega Inversions	1243	502	40%	0.01	396	327	83%	5.1
Prime Time	73	34	47%	0.00	37	27	73%	7.0
Private Space	172	27	16%	0.00	31	22	71%	5.8
Robots on a Grid	852	226	27%	0.02	177	146	82%	4.3