Problems from Nordic Collegiate Programming Contest (NCPC) 2013

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Boiling Vegetables	1172	447	38%	0.00	392	326	83%	3.4
Cliff Walk	47	23	49%	0.01	26	21	81%	6.9
Dance Reconstruction	133	26	20%	0.00	38	25	66%	7.4
Dartboard	440	140	32%	0.00	125	106	85%	4.3
Erase Securely	4285	2253	53%	0.00	2104	1963	93%	1.7
Number Trick	1529	257	17%	0.00	306	177	58%	7.2
Pinball	569	100	18%	0.07	108	46	43%	8.2
Planting Trees	8258	3908	47%	0.00	3471	3107	90%	2.4
Robert Hood	2260	643	28%	0.02	478	352	74%	4.7
Timebomb	2350	1207	51%	0.00	1147	1080	94%	1.8
Virus Replication	4250	946	22%	0.00	837	678	81%	3.5