Problems from Northwestern Europe Regional Contest (NWERC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Assigning Workstations	6394	1436	22%	0.05	1073	911	85%	3.6
Better Productivity	376	79	21%	0.00	93	62	67%	7.7
Cleaning Pipes	872	240	28%	0.01	205	159	78%	5.1
Debugging	912	258	28%	0.00	274	203	74%	5.9
Elementary Math	1740	573	33%	0.00	460	354	77%	5.2
Flight Plan Evaluation	141	66	47%	0.00	51	47	92%	3.8
Guessing Camels	850	279	33%	0.04	253	172	68%	6.5
Hole in One	234	49	21%	0.00	47	38	81%	7.6
Identifying Map Tiles	2280	1407	62%	0.00	1341	1283	96%	1.6
Jumbled Communication	1322	874	66%	0.00	780	731	94%	2.0
Kitchen Combinatorics	832	302	36%	0.00	227	181	80%	5.5