Problems from North American Invitational Programming Contest (NAIPC) 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Busy Board	482	81	17%	0.01	119	65	55%	7.2
Cost of Living	204	36	18%	0.01	62	27	44%	8.8
Cutting Strings	251	46	18%	0.09	59	31	53%	8.2
Heaps of Fun	123	63	51%	0.00	55	47	85%	4.6
Intersecting Rectangles	1338	372	28%	0.03	276	205	74%	5.9
It's a Mod, Mod, Mod, Mod World	1046	185	18%	0.05	207	98	47%	7.0
Knight of the Tarot Cards	255	55	22%	4.33	47	26	55%	8.3
Monotony	248	115	46%	0.61	82	64	78%	6.2
Piece of Cake	666	237	36%	0.01	200	141	70%	6.1
Planes, Trains, but not Automobiles	239	65	27%	0.05	59	45	76%	5.9
Rocket Powered Hovercraft	228	61	27%	0.00	42	33	79%	6.4
Subsequences in Substrings	1073	422	39%	0.01	291	240	82%	4.9
XOR Sequences	310	120	39%	0.00	106	86	81%	4.8