Problems from Nordic Collegiate Programming Contest (NCPC) 2011

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Car Trouble	184	56	30%	0.00	57	50	88%	4.8
Death Knight Hero	2911	1582	54%	0.00	1490	1410	95%	1.5
Elevator Trouble	748	235	31%	0.00	211	182	86%	3.5
Enemy Division	140	47	34%	0.03	38	32	84%	5.9
Knigs of the Forest	308	97	31%	0.03	94	80	85%	4.5
ls	474	155	33%	0.00	154	120	78%	4.5
Mega Inversions	991	410	41%	0.01	306	260	85%	4.9
Prime Time	55	24	44%	0.00	25	19	76%	6.6
Private Space	75	12	16%	0.00	19	10	53%	7.9
Robots on a Grid	540	169	31%	0.02	122	102	84%	4.8