Problems from 2014 ICPC North America Qualifier

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Color Walk	132	38	29%	0.01	40	25	62%	8.6
Eight Queens	11594	3135	27%	0.00	3078	2488	81%	3.2
Flexible Spaces	6325	3449	55%	0.00	2742	2533	92%	1.7
Flip Five	1645	841	51%	0.00	765	671	88%	2.8
Human Cannonball Run	2482	1129	45%	0.00	896	820	92%	2.3
Mixed Fractions	11739	6117	52%	0.00	5716	5415	95%	1.4
Narrow Art Gallery	6526	2039	31%	0.00	1681	1456	87%	3.0
Pesky Mosquitoes	1233	311	25%	0.00	273	215	79%	5.3
Tractor	952	277	29%	0.00	327	229	70%	6.0
Units	713	299	42%	0.00	250	213	85%	3.4
Yikes - Bikes!	350	63	18%	0.00	99	52	53%	8.2