Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1429	572	40%	0.00	515	428	83%	3.7
Cliff Walk	61	30	49%	0.01	33	27	82%	6.5
Dance Reconstruction	169	37	22%	0.00	48	32	67%	7.3
Dartboard	494	164	33%	0.00	152	129	85%	4.4
Erase Securely	6093	3146	52%	0.00	2901	2715	94%	1.7
Number Trick	1741	298	17%	0.00	348	205	59%	7.0
Pinball	639	109	17%	0.05	119	52	44%	8.4
Planting Trees	13472	6109	45%	0.00	5035	4561	91%	1.8
Robert Hood	3192	938	29%	0.02	628	482	77%	4.2
Timebomb	2917	1553	53%	0.00	1457	1383	95%	1.7
Virus Replication	5989	1453	24%	0.00	1206	1005	83%	3.4