Problems from Northwestern Europe Regional Contest (NWERC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Assigning Workstations	1015	310	31%	0.05	320	240	75%	5.1
Better Productivity	326	73	22%	0.00	81	56	69%	6.4
Cleaning Pipes	713	203	28%	0.01	159	128	81%	4.4
Debugging	706	195	28%	0.00	194	146	75%	5.8
Elementary Math	1188	406	34%	0.00	316	242	77%	5.1
Flight Plan Evaluation	102	47	46%	0.00	41	37	90%	4.2
Guessing Camels	615	204	33%	0.04	168	122	73%	6.3
Hole in One	216	44	20%	0.00	42	35	83%	6.1
Identifying Map Tiles	1775	1058	60%	0.00	999	952	95%	1.7
Jumbled Communication	963	655	68%	0.00	577	542	94%	1.9
Kitchen Combinatorics	530	183	35%	0.00	156	122	78%	5.6