Problems from 2014 ICPC North America Qualifier

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Color Walk	112	35	31%	0.01	34	22	65%	8.2
Eight Queens	9394	2531	27%	0.00	2484	1993	80%	3.2
Flexible Spaces	4126	2378	58%	0.00	1989	1827	92%	1.8
Flip Five	1303	676	52%	0.00	616	539	88%	2.8
Human Cannonball Run	798	337	42%	0.00	302	260	86%	3.4
Mixed Fractions	9326	4874	52%	0.00	4556	4312	95%	1.4
Narrow Art Gallery	4817	1509	31%	0.00	1252	1092	87%	2.7
Pesky Mosquitoes	989	246	25%	0.00	218	170	78%	5.3
Tractor	839	243	29%	0.00	286	202	71%	5.9
Units	478	219	46%	0.00	198	167	84%	3.6
Yikes - Bikes!	330	57	17%	0.00	89	47	53%	8.2