Problems from North American Invitational Programming Contest (NAIPC) 2019

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Busy Board	589	97	16%	0.01	138	75	54%	8.4
Cost of Living	413	51	12%	0.01	115	37	32%	9.0
Cutting Strings	341	70	21%	0.09	75	41	55%	8.5
Heaps of Fun	143	75	52%	0.00	65	55	85%	6.5
Intersecting Rectangles	1575	450	29%	0.03	324	245	76%	6.4
It's a Mod, Mod, Mod, Mod World	1243	248	20%	0.05	248	127	51%	7.5
Knight of the Tarot Cards	290	62	21%	4.33	51	29	57%	7.7
Monotony	319	149	47%	0.61	101	78	77%	8.2
Piece of Cake	1157	297	26%	0.01	369	171	46%	8.5
Planes, Trains, but not Automobiles	321	87	27%	0.04	78	56	72%	8.6
Rocket Powered Hovercraft	322	79	25%	0.00	50	42	84%	4.6
Subsequences in Substrings	1205	503	42%	0.01	327	275	84%	5.1
XOR Sequences	373	148	40%	0.00	125	104	83%	5.6