Problems from Nordic Collegiate Programming Contest (NCPC) 2009

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Allergy Test	637	159	25%	0.00	206	100	49%	8.1
Beacons	294	77	26%	0.33	57	39	68%	7.4
Code Permutations	70	27	39%	0.03	25	18	72%	7.5
Flight Planning	263	96	37%	0.00	87	65	75%	7.5
Gokigen Naname	807	163	20%	0.00	153	110	72%	7.2
Money Matters	5911	2250	38%	0.00	1758	1510	86%	3.1
Playfair Cipher	625	280	45%	0.00	284	247	87%	2.7
Rain Fall	307	108	35%	0.00	109	92	84%	4.7
Soda Slurper	6985	4120	59%	0.00	4065	3797	93%	1.5
Speedy Escape	1054	213	20%	0.00	155	132	85%	5.4