Problems by Greg Hamerly – Kattis, Kattis

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
Add Two Numbers	0.00	6	20445	19423	95%	1.2Easy	en
Adding Words	0.00	187	5864	4586	78%	3.0Medium	en
All Different Directions	0.00	197	1237	1063	86%	2.7Easy	en
BASIC Interpreter	0.00	422	600	444	74%	5.1Medium	en
Bag of Tiles	0.02	254	588	457	78%	4.8Medium	en
Birthday Paradox	0.00	249	150	118	79%	5.2Medium	en
Bounding Robots	0.00	244	2181	2022	93%	2.1Easy	en
Cellular Merging	0.01	1602	28	11	39%	8.8Hard	en
Charting Progress	0.00	85	1579	1446	92%	2.2Easy	en
Chatter	0.10	611	270	228	84%	4.0Medium	en
Checking For Correctness	0.00	54	800	666	83%	3.9Medium	en
Connect the Dots	0.00	576	721	628	87%	3.5Medium	en
Convex Polygon Area	0.00	108	1491	1382	93%	2.0Easy	en
Counting Stars	0.00	255	4166	3537	85%	2.5Easy	en
DNA Similarity	0.01	231	27	25	93%	3.0Medium	en
Dart Scoring	0.00	636	419	354	84%	3.5Medium	en
Das Blinkenlights	0.00	45	3303	3087	93%	1.6Easy	en
Deduplicating Files	0.01	245	1486	1149	77%	3.9Medium	en
Detailed Differences	0.00	51	11233	10815	96%	1.4Easy	en
Dicey Frequencies	0.01	340	15	12	80%	4.1Medium	en
Different Distances	0.00	78	3189	2993	94%	2.2Easy	en
Echo Echo Echo	0.00	6	18825	18102	96%	1.2Easy	en
Engineering English	0.00	38	3248	2784	86%	2.6Easy	en
Enlarging Hash Tables	0.00	136	1314	1146	87%	2.6Easy	en
Erdős Numbers	0.00	261	411	323	79%	4.4Medium	en
Escape Plan	0.01	719	369	278	75%	5.2Medium	en
Estimating the Area of a Circle	0.00	49	4514	4278	95%	1.6Easy	en
Five, Six, Pick Up Sticks; Seven, Eight, Lay Them Straight	0.00	179	18	16	89%	3.6Medium	en
Forest Fires	0.17	773	120	96	80%	3.8Medium	en
Fouled files	0.00	32	49	45	92%	3.3Medium	en
Functional Fun	0.00	367	837	781	93%	2.0Easy	en
Fundamental Neighbors	0.00	116	734	628	86%	2.9Medium	en
Generalized Recursive Functions	0.02	280	444	371	84%	4.3Medium	en
Genetic Search	0.00	213	971	871	90%	2.9Medium	en
Gerrymandering	0.00	183	2143	2059	96%	1.6Easy	en
Golomb Rulers	0.01	275	793	705	89%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	109	84	77%	4.7Medium	en
Heliocentric	0.00	89	2201	2035	92%	2.1Easy	en
Hitting the Targets	0.00	173	2097	1977	94%	1.6Easy	en
How Many Digits?	0.00	71	2301	1824	79%	3.2Medium	en
Hurricane Danger!	0.00	199	516	440	85%	3.2Medium	en
Image Decoding	0.00	253	1204	981	81%	3.1Medium	en
Island Hopping	0.01	257	1933	1720	89%	2.4Easy	en
Juggling Patterns	0.00	234	504	374	74%	4.8Medium	en
Limited Correspondence	0.01	867	190	126	66%	6.5Hard	en
Loopy Cab Drivers	0.01	958	154	123	80%	5.8Hard	en
Loopy Transit	0.00	345	222	185	83%	3.6Medium	en
Managing Packaging	0.01	400	383	284	74%	4.4Medium	en
Mandelbrot	0.00	103	1193	1036	87%	2.6Easy	en
Matrix Inverse	0.00	93	1623	1366	84%	2.9Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	351	304	87%	3.8Medium	en
Maximizing Your Pay	0.00	484	211	163	77%	5.1Medium	en
Maze Movement	0.02	962	697	613	88%	3.0Medium	en
Metaprogramming	0.00	97	1732	1538	89%	2.0Easy	en
Missing Numbers	0.00	56	5414	5014	93%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	45	30	67%	6.9Hard	en
Music Your Way	0.00	151	1454	1349	93%	1.8Easy	en
Musical Notation	0.00	123	861	797	93%	2.2Easy	en
Name That Permutation	0.00	111	398	332	83%	4.2Medium	en
Notable Quotables	0.00	1300	40	19	48%	7.6Hard	en
Oddities	0.00	38	24413	23432	96%	1.4Easy	en
Out of Context	0.02	1267	25	13	52%	7.1Hard	en
Pachinko Probability	0.00	540	212	175	83%	5.0Medium	en
Pachyderm Peanut Packing	0.00	265	913	828	91%	2.8Medium	en
Page Layout	0.02	310	366	299	82%	5.6Hard	en
Parallel Analysis	0.08	102	177	148	84%	4.4Medium	en
Parsing Hex	0.00	36	1366	1200	88%	2.4Easy	en
Permutation Encryption	0.00	187	2148	1890	88%	2.2Easy	en
Polish Notation	0.00	122	662	513	77%	4.6Medium	en
Preludes	0.00	115	1644	1528	93%	2.0Easy	en
Primal Representation	0.02	119	784	639	82%	3.0Medium	en
Prime Reduction	0.03	160	1568	1381	88%	2.5Easy	en
Prime Spiral	0.00	666	339	290	86%	3.5Medium	en
Quick Estimates	0.00	18	8567	8120	95%	1.8Easy	en
Quite a Problem	0.00	31	2483	2262	91%	2.1Easy	en
Race Day	0.00	579	232	197	85%	3.6Medium	en
Random Walking in a Winter Wonderland	0.12	842	12	7	58%	5.8Hard	en
Reachable Roads	0.00	266	3043	2799	92%	1.9Easy	en
RectSect	0.00	175	24	22	92%	3.6Medium	en
Reversing Roads	0.00	904	969	803	83%	3.2Medium	en
Robot Protection	0.01	286	719	652	91%	2.4Easy	en
Saving Daylight	0.00	76	1981	1792	90%	2.2Easy	en
Secure Doors	0.00	81	4420	4085	92%	1.7Easy	en
Self-Similar Strings	0.02	147	403	357	89%	2.9Medium	en
Selling Spatulas	0.00	458	606	380	63%	6.5Hard	en
Sierpiński Circumference	0.00	60	1137	996	88%	3.0Medium	en
Sneak Attack	0.00	970	69	33	48%	8.3Hard	en
Sort Two Numbers	0.00	6	15243	14579	96%	1.2Easy	en
Sort of Sorting	0.00	46	9594	8673	90%	1.6Easy	en
Statistics	0.00	69	7344	6763	92%	1.7Easy	en
Stirling's Approximation	0.00	86	356	295	83%	4.2Medium	en
Structural Differences	0.00	555	36	20	56%	6.9Hard	en
Substring Switcheroo	0.26	576	251	201	80%	5.4Medium	en
Sudokunique	0.01	1424	274	135	49%	8.2Hard	en
Support Vector Machine	0.02	95	354	269	76%	3.5Medium	en
Surveillance Squared	0.01	270	80	51	64%	6.3Hard	en
Synchronizing Lists	0.00	108	5107	4833	95%	1.7Easy	en
Texture Analysis	0.00	70	1817	1526	84%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	787	679	86%	2.6Easy	en
Transportation Planning	0.03	1157	231	193	84%	4.4Medium	en

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