Problems from Nordic Collegiate Programming Contest (NCPC) 2011

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Car Trouble	286	89	31%	0.00	92	81	88%	4.5
Death Knight Hero	4277	2282	53%	0.00	2177	2056	94%	1.5
Elevator Trouble	1897	540	28%	0.00	474	413	87%	2.9
Enemy Division	199	74	37%	0.03	62	53	85%	5.2
Knigs of the Forest	1153	270	23%	0.03	231	200	87%	3.8
Mega Inversions	1311	531	41%	0.01	410	347	85%	4.7
Prime Time	80	34	42%	0.00	38	27	71%	7.4
Private Space	172	27	16%	0.00	31	22	71%	5.6
Robots on a Grid	933	251	27%	0.02	188	155	82%	4.5
ls	820	243	30%	0.00	240	184	77%	5.2