Problems from 2014 ICPC North America Qualifier

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Color Walk	129	36	28%	0.01	37	23	62%	8.5
Eight Queens	10633	2865	27%	0.00	2812	2271	81%	2.9
Flexible Spaces	4995	2767	55%	0.00	2305	2123	92%	1.7
Flip Five	1373	713	52%	0.00	647	567	88%	2.7
Human Cannonball Run	1637	751	46%	0.00	618	553	89%	2.7
Mixed Fractions	10432	5431	52%	0.00	5101	4823	95%	1.4
Narrow Art Gallery	5395	1678	31%	0.00	1413	1229	87%	2.7
Pesky Mosquitoes	1051	271	26%	0.00	238	189	79%	5.1
Tractor	882	252	29%	0.00	303	211	70%	6.0
Units	521	241	46%	0.00	219	186	85%	3.5
Yikes - Bikes!	341	61	18%	0.00	93	50	54%	8.1