Problems from 2017 ICPC North American Qualifier Contest

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Birthday Cake	1272	284	22%	0.00	328	233	71%	5.8
Bumped!	5190	1207	23%	0.04	879	690	78%	4.3
Canonical Coin Systems	5766	1276	22%	0.01	1225	729	60%	4.6
Cat and Mice	1563	391	25%	0.30	302	229	76%	5.7
Company Picnic	774	330	43%	0.00	290	239	82%	4.5
GlitchBot	2483	1526	61%	0.00	1340	1242	93%	1.9
Greeting Card	3765	1109	29%	0.04	1112	779	70%	4.5
Imperfect GPS	2427	777	32%	0.00	777	615	79%	3.9
Odd Gnome	7867	4545	58%	0.00	3947	3718	94%	1.6
Progressive Scramble	2530	1359	54%	0.00	1279	1165	91%	2.1
Space Probe	766	258	34%	0.19	209	169	81%	5.0
Suspension Bridges	3251	862	27%	0.00	764	631	83%	3.6
Umbral Decoding	1084	164	15%	0.01	204	115	56%	7.6