Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	638	256	40%	0.00	241	198	82%	3.4
Cliff Walk	46	22	48%	0.01	25	20	80%	6.9
Dance Reconstruction	129	25	19%	0.00	35	24	69%	6.8
Dartboard	401	123	31%	0.00	112	93	83%	4.8
Erase Securely	3419	1834	54%	0.00	1723	1609	93%	1.6
Number Trick	1107	194	18%	0.00	249	140	56%	7.0
Pinball	537	88	16%	0.07	101	42	42%	7.9
Planting Trees	6476	3116	48%	0.00	2765	2490	90%	2.1
Robert Hood	1982	528	27%	0.02	407	292	72%	5.0
Timebomb	1910	998	52%	0.00	955	904	95%	1.7
Virus Replication	2728	665	24%	0.00	619	499	81%	4.0