Problems from 2014 ICPC North America Qualifier

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Color Walk	134	39	29%	0.01	40	25	62%	8.7
Eight Queens	12514	3373	27%	0.00	3251	2623	81%	3.5
Flexible Spaces	6625	3623	55%	0.00	2838	2628	93%	1.7
Flip Five	1760	901	51%	0.00	806	707	88%	2.8
Human Cannonball Run	2523	1147	45%	0.00	921	837	91%	2.5
Mixed Fractions	12754	6536	51%	0.00	6109	5782	95%	1.5
Narrow Art Gallery	6879	2173	32%	0.00	1755	1522	87%	3.0
Pesky Mosquitoes	1243	316	25%	0.00	277	219	79%	5.3
Tractor	975	279	29%	0.00	331	231	70%	6.0
Units	742	308	42%	0.00	261	222	85%	3.4
Yikes - Bikes!	355	64	18%	0.00	101	53	52%	8.3