Problems from Northwestern Europe Contest (NWERC) 2009

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
An Industrial Spy	2568	1357	53%	0.02	1095	962	88%	2.9
Common Subexpression Elimination	529	171	32%	0.14	81	68	84%	6.0
Divisible Subsequences	1576	741	47%	0.01	588	493	84%	3.7
Fractal	427	119	28%	0.00	121	94	78%	6.1
Mountain Road	162	45	28%	0.08	51	38	75%	7.5
Moving to Nuremberg	379	83	22%	0.08	92	69	75%	5.9
Room Assignments	231	64	28%	0.12	67	52	78%	6.8
Settlers of Catan	693	318	46%	0.00	279	239	86%	4.3
Simple Polygon	1648	414	25%	0.01	288	235	82%	5.3
Wormholes	401	78	19%	0.00	72	42	58%	8.2