Problems from Northwestern Europe Regional Contest (NWERC) 2015

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Assigning Workstations	940	291	31%	0.05	297	224	75%	4.9
Better Productivity	301	70	23%	0.00	78	53	68%	6.8
Cleaning Pipes	685	200	29%	0.01	152	125	82%	4.0
Debugging	595	180	30%	0.00	179	138	77%	5.5
Elementary Math	1142	393	34%	0.00	304	232	76%	5.0
Flight Plan Evaluation	102	47	46%	0.00	41	37	90%	4.2
Guessing Camels	601	201	33%	0.04	163	119	73%	6.2
Hole in One	216	44	20%	0.00	42	35	83%	6.1
Identifying Map Tiles	1466	926	63%	0.00	873	835	96%	1.6
Jumbled Communication	854	607	71%	0.00	534	504	94%	1.9
Kitchen Combinatorics	511	175	34%	0.00	150	118	79%	5.7