Problems from Northwestern Europe Contest (NWERC) 2009

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
An Industrial Spy	1779	937	53%	0.02	710	612	86%	3.2
Common Subexpression Elimination	271	88	32%	0.14	54	46	85%	6.7
Divisible Subsequences	1245	574	46%	0.01	424	347	82%	4.2
Fractal	254	82	32%	0.00	88	70	80%	4.4
Mountain Road	95	32	34%	0.08	42	29	69%	7.7
Moving to Nuremberg	300	71	24%	0.08	80	57	71%	6.6
Room Assignments	139	41	29%	0.12	46	38	83%	6.5
Settlers of Catan	467	221	47%	0.00	224	190	85%	4.2
Simple Polygon	1279	326	25%	0.01	225	185	82%	5.5
Wormholes	328	67	20%	0.00	59	32	54%	8.4