Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1110	428	39%	0.00	364	310	85%	3.2
Cliff Walk	46	22	48%	0.01	25	20	80%	6.9
Dance Reconstruction	130	25	19%	0.00	36	24	67%	6.8
Dartboard	408	129	32%	0.00	117	98	84%	4.5
Erase Securely	3880	2066	53%	0.00	1926	1803	94%	1.6
Number Trick	1367	246	18%	0.00	284	170	60%	6.8
Pinball	545	92	17%	0.07	103	43	42%	7.9
Planting Trees	6881	3348	49%	0.00	2963	2677	90%	1.9
Robert Hood	2066	557	27%	0.02	433	311	72%	5.1
Timebomb	2103	1091	52%	0.00	1042	985	95%	1.7
Virus Replication	3089	731	24%	0.00	684	551	81%	4.1