Problems from Nordic Collegiate Programming Contest (NCPC) 2009

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Allergy Test	534	140	26%	0.00	163	86	53%	7.3
Beacons	266	74	28%	0.33	52	37	71%	7.2
Code Permutations	64	24	38%	0.03	22	17	77%	6.4
Flight Planning	172	64	37%	0.16	58	47	81%	6.2
Gokigen Naname	510	122	24%	0.00	112	84	75%	7.3
Money Matters	4114	1548	38%	0.00	1209	1030	85%	3.1
Playfair Cipher	365	181	50%	0.00	176	160	91%	2.5
Rain Fall	214	76	36%	0.00	80	68	85%	4.3
Soda Slurper	3598	2135	59%	0.00	2114	1979	94%	1.6
Speedy Escape	940	191	20%	0.00	132	114	86%	5.4