Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1505	620	41%	0.00	558	468	84%	3.7
Cliff Walk	64	33	52%	0.01	36	30	83%	6.5
Dance Reconstruction	184	39	21%	0.00	54	34	63%	8.2
Dartboard	533	174	33%	0.00	163	138	85%	4.5
Erase Securely	6474	3359	52%	0.00	3094	2901	94%	1.7
Number Trick	1893	306	16%	0.00	365	212	58%	7.2
Pinball	653	114	17%	0.05	123	55	45%	8.5
Planting Trees	13926	6353	46%	0.00	5262	4767	91%	1.9
Robert Hood	3540	1050	30%	0.02	685	518	76%	4.9
Timebomb	3144	1672	53%	0.00	1568	1488	95%	1.7
Virus Replication	6174	1503	24%	0.00	1261	1048	83%	3.7