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%	8.1
Eight Queens	9203	2470	27%	0.00	2422	1942	80%	3.2
Flexible Spaces	3965	2291	58%	0.00	1907	1749	92%	1.9
Flip Five	1274	657	52%	0.00	601	523	87%	2.8
Human Cannonball Run	753	316	42%	0.00	284	245	86%	3.4
Mixed Fractions	9073	4735	52%	0.00	4415	4176	95%	1.4
Narrow Art Gallery	4791	1498	31%	0.00	1242	1084	87%	2.7
Pesky Mosquitoes	957	245	26%	0.00	216	169	78%	5.3
Tractor	818	237	29%	0.00	282	198	70%	5.9
Units	428	197	46%	0.00	191	161	84%	3.7
Yikes - Bikes!	324	56	17%	0.00	88	46	52%	8.2