Problems from Nordic Collegiate Programming Contest (NCPC) 2009

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Allergy Test	669	174	26%	0.00	219	111	51%	8.0
Beacons	319	79	25%	0.33	62	41	66%	8.0
Code Permutations	94	31	33%	0.03	30	22	73%	7.8
Flight Planning	291	110	38%	0.00	106	78	74%	7.2
Gokigen Naname	815	167	20%	0.00	156	113	72%	7.0
Money Matters	6193	2382	38%	0.00	1873	1612	86%	3.2
Playfair Cipher	782	352	45%	0.00	361	312	86%	2.7
Rain Fall	330	118	36%	0.00	121	101	83%	5.4
Soda Slurper	8333	4823	58%	0.00	4749	4433	93%	1.6
Speedy Escape	1067	215	20%	0.00	159	134	84%	5.8