Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1209	464	38%	0.00	407	338	83%	3.5
Cliff Walk	47	23	49%	0.01	26	21	81%	6.9
Dance Reconstruction	134	26	19%	0.00	39	25	64%	7.5
Dartboard	453	146	32%	0.00	132	112	85%	4.3
Erase Securely	4662	2452	53%	0.00	2290	2138	93%	1.7
Number Trick	1532	258	17%	0.00	308	178	58%	7.2
Pinball	573	102	18%	0.07	109	48	44%	8.1
Planting Trees	8942	4211	47%	0.00	3727	3346	90%	2.0
Robert Hood	2427	695	29%	0.02	501	372	74%	4.6
Timebomb	2521	1301	52%	0.00	1228	1160	94%	1.8
Virus Replication	4610	1030	22%	0.00	917	746	81%	3.6