Problems from ICPC 2012 North American Qualifier

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Choosing Numbers	523	103	20%	0.02	119	79	66%	7.0
Hitting the Targets	2054	1169	57%	0.00	1137	1054	93%	1.7
Loopy Transit	118	60	51%	0.00	58	49	84%	4.6
Maze Movement	383	189	49%	0.06	162	135	83%	4.6
Multi-Touch Gesture Classification	115	28	24%	0.00	25	20	80%	6.5
Out of Context	29	9	31%	0.07	11	6	55%	7.9
Quite a Problem	3506	1475	42%	0.00	1386	1260	91%	2.1
Ragged Right	3797	1910	50%	0.00	1905	1745	92%	1.9
Stacking Curvy Blocks	346	101	29%	0.00	112	91	81%	4.7
Texas Summers	441	149	34%	0.02	132	105	80%	4.1
Unicycle Counting	175	40	23%	0.00	54	35	65%	8.1