Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1377	546	40%	0.00	489	406	83%	3.7
Cliff Walk	60	29	48%	0.01	32	26	81%	6.8
Dance Reconstruction	165	35	21%	0.00	47	31	66%	7.4
Dartboard	477	161	34%	0.00	149	126	85%	4.3
Erase Securely	5743	2986	52%	0.00	2769	2590	94%	1.7
Number Trick	1721	294	17%	0.00	344	201	58%	7.1
Pinball	636	107	17%	0.05	117	50	43%	8.4
Planting Trees	12277	5644	46%	0.00	4704	4254	90%	1.9
Robert Hood	3041	889	29%	0.02	598	455	76%	4.4
Timebomb	2842	1507	53%	0.00	1410	1338	95%	1.7
Virus Replication	5562	1283	23%	0.00	1112	919	83%	3.6