Problems from Principles of Algorithmic Problem Solving

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
Arithmetic Functions	645	393	61%	0.00	399	377	94%	1.7
Cinema Crowds	879	412	47%	0.00	397	370	93%	2.2
Cinema Crowds 2	791	489	62%	0.00	471	449	95%	1.8
Cinema Seating	271	116	43%	0.03	106	98	92%	3.0
Counting Days	120	67	56%	0.00	67	64	96%	2.6
Cut in Line	512	370	72%	0.00	322	313	97%	1.8
Digit Swap	4302	2892	67%	0.00	2833	2719	96%	1.3
Eulerian Graphs	180	102	57%	0.02	85	76	89%	3.3
Eulerian Graphs 2	265	144	54%	0.06	44	39	89%	4.3
Grading	2198	1331	61%	0.00	1295	1241	96%	1.5
Hailstone Sequences	689	410	60%	0.00	407	383	94%	1.8
Hermits	815	252	31%	0.01	263	198	75%	3.6
Logic Functions	517	313	61%	0.00	315	305	97%	1.6
Massive Card Game	522	227	43%	0.04	159	139	87%	2.9
N-sum	4597	2907	63%	0.00	2809	2695	96%	1.4
Odd A's, Even B's	214	93	43%	0.00	88	77	88%	4.8
Odd Echo	7538	4055	54%	0.00	3894	3653	94%	1.3
Popularity Contest	553	423	76%	0.01	288	280	97%	1.7
Triangle Area	6057	3506	58%	0.00	3349	3223	96%	1.3
Triangle Drama	147	91	62%	0.00	85	78	92%	3.1
Trip Planning	1090	375	34%	0.05	250	232	93%	2.4
Two-sum	8170	4678	57%	0.00	4536	4344	96%	1.3
Varied Amusements	255	154	60%	0.00	82	75	91%	2.4 - 3.8
Vector Functions	566	162	29%	0.03	165	144	87%	2.6