Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1147	435	38%	0.00	382	317	83%	3.4
Cliff Walk	46	22	48%	0.01	25	20	80%	6.9
Dance Reconstruction	132	26	20%	0.00	37	25	68%	6.7
Dartboard	411	132	32%	0.00	120	101	84%	4.5
Erase Securely	4056	2140	53%	0.00	2004	1873	93%	1.7
Number Trick	1457	252	17%	0.00	299	175	59%	7.0
Pinball	545	92	17%	0.07	103	43	42%	7.9
Planting Trees	7377	3599	49%	0.00	3154	2852	90%	1.8
Robert Hood	2148	609	28%	0.02	452	330	73%	4.8
Timebomb	2179	1131	52%	0.00	1083	1024	95%	1.8
Virus Replication	3150	746	24%	0.00	704	564	80%	4.3