Problems from Principles of Algorithmic Problem Solving

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Arithmetic Functions	0.00	67	1490	1352	91%	1.8Easy	en
Bit Game	0.20	224	38	22	58%	8.5Hard	en
Chocolate Division	0.00	38	728	667	92%	1.8Easy	en
Cinema Crowds	0.00	49	1061	967	91%	2.1Easy	en
Cinema Crowds 2	0.00	29	1147	1082	94%	1.7Easy	en
Cinema Seating	0.02	190	407	358	88%	2.6Easy	en
Counting Days	0.00	85	207	179	86%	3.1Medium	en
Cut in Line	0.00	106	1697	1608	95%	1.6Easy	en
Digit Swap	0.00	3	12756	12259	96%	1.2Easy	en
Divisor Counts	0.06	87	266	225	85%	3.4Medium	en
Divisor Shuffle	0.02	75	168	131	78%	3.8Medium	en
Dual Divisibility	0.00	46	229	196	86%	3.4Medium	en
Eulerian Graphs	0.01	256	221	203	92%	2.4Easy	en
Eulerian Graphs 2	0.02	269	153	137	90%	2.6Easy	en
Evening Out 1	0.00	33	422	384	91%	2.3Easy	en
Evening Out 2	0.00	104	272	204	75%	5.2Medium	en
Factorial Power	0.00	242	188	162	86%	3.4Medium	en
Fire Exits	0.01	839	26	13	50%	8.2Hard	en
Fuzzy Family Tree	0.03	457	60	45	75%	4.0 - 5.1Medium	en
GCD	0.00	13	2439	2303	94%	1.4Easy	en
GCD Sum	0.00	79	85	50	59%	6.8Hard	en
GCD Sum 2	0.59	287	84	57	68%	5.0Medium	en
GCD and LCM	0.00	175	128	99	77%	4.2Medium	en
Generalized Knights	0.00	2180	18	6	33%	8.4Hard	en
Grading	0.00	33	3654	3457	95%	1.4Easy	en
Hailstone Sequences	0.00	48	1206	1136	94%	1.6Easy	en
Hermits	0.01	98	775	660	85%	2.6Easy	en
Inheritance	0.00	82	244	222	91%	2.6Easy	en
Inverse Totient	0.30	938	24	12	50%	8.1Hard	en
Knight Packing	0.00	6	6663	6432	97%	1.3Easy	en
Logic Functions	0.00	96	1040	968	93%	1.6Easy	en
Longest Prime Sum	0.00	6	1006	892	89%	2.2Easy	en
Longest path in a DAG	0.01	472	238	200	84%	3.7Medium	en
Marathon	0.00	226	61	45	74%	7.3Hard	en
Massive Card Game	0.02	102	1220	1083	89%	2.5Easy	en
Maximum Clique	0.00	314	169	109	64%	1.9 - 5.6Hard	en
Minimal Fibonacci Sums	0.00	82	612	552	90%	2.0Easy	en sv
Multiplication Table	0.00	72	521	422	81%	2.4 - 2.8Easy	en
Mårten's DFS	0.03	514	199	148	74%	3.3 - 3.6Medium	en sv
N-sum	0.00	15	11575	11094	96%	1.2Easy	en
Odd A's, Even B's	0.00	64	240	201	84%	3.5Medium	en
Odd Echo	0.00	6	13489	12564	93%	1.2Easy	en
Popularity Contest	0.01	72	915	860	94%	1.8Easy	en
Positive Divisors	0.00	95	492	414	84%	2.6Easy	en
Primality	0.00	34	399	249	62%	2.2 - 5.0Medium	en
Prime Count	0.02	446	263	86	33%	2.9 - 8.0Hard	en
Product Divisors	0.09	373	117	84	72%	5.9Hard	en
Sailing Friends	0.01	191	421	387	92%	2.1Easy	en
Shortest Composite Sum	0.00	28	256	214	84%	3.6Medium	en
Subcommittees	0.00	6	120	97	81%	3.1Medium	en
Triangle Area	0.00	15	13089	12546	96%	1.2Easy	en
Triangle Drama	0.00	105	208	192	92%	2.6Easy	en
Trip Planning	0.02	124	574	488	85%	2.9Medium	en
Two-sum	0.00	6	15762	15062	96%	1.2Easy	en
Varied Amusements	0.00	66	397	326	82%	2.1 - 2.6Easy	en
Vector Functions	0.03	575	677	542	80%	3.0Medium	en