Problems from Northwestern Europe Regional Contest (NWERC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Assigning Workstations	912	281	31%	0.05	290	218	75%	4.9
Better Productivity	301	70	23%	0.00	78	53	68%	6.8
Cleaning Pipes	672	195	29%	0.01	146	120	82%	3.9
Debugging	584	179	31%	0.00	176	137	78%	5.3
Elementary Math	1101	390	35%	0.00	290	229	79%	4.6
Flight Plan Evaluation	97	45	46%	0.00	39	35	90%	4.2
Guessing Camels	593	197	33%	0.04	159	115	72%	6.3
Hole in One	214	43	20%	0.00	40	34	85%	5.7
Identifying Map Tiles	1331	846	64%	0.00	797	761	95%	1.6
Jumbled Communication	825	587	71%	0.00	520	490	94%	1.9
Kitchen Combinatorics	506	172	34%	0.00	146	115	79%	5.6