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	20195	19180	95%	1.2Easy	en
Adding Words	0.00	187	5835	4556	78%	3.0Medium	en
All Different Directions	0.00	197	1232	1058	86%	2.7Easy	en
BASIC Interpreter	0.00	422	599	443	74%	5.1Medium	en
Bag of Tiles	0.02	254	583	453	78%	4.8Medium	en
Birthday Paradox	0.00	249	146	115	79%	5.3Medium	en
Bounding Robots	0.00	244	2177	2018	93%	2.1Easy	en
Cellular Merging	0.01	1602	27	11	41%	8.7Hard	en
Charting Progress	0.00	85	1579	1446	92%	2.2Easy	en
Chatter	0.10	611	268	228	85%	4.1Medium	en
Checking For Correctness	0.00	54	798	665	83%	3.9Medium	en
Connect the Dots	0.00	576	712	620	87%	3.5Medium	en
Convex Polygon Area	0.00	108	1483	1377	93%	1.9Easy	en
Counting Stars	0.00	255	4120	3495	85%	2.6Easy	en
DNA Similarity	0.01	386	23	21	91%	3.2Medium	en
Dart Scoring	0.00	636	419	354	84%	3.6Medium	en
Das Blinkenlights	0.00	45	3288	3073	93%	1.6Easy	en
Deduplicating Files	0.01	245	1470	1133	77%	4.0Medium	en
Detailed Differences	0.00	51	11095	10682	96%	1.4Easy	en
Dicey Frequencies	0.01	340	14	11	79%	4.3Medium	en
Different Distances	0.00	78	3184	2988	94%	2.2Easy	en
Echo Echo Echo	0.00	6	18683	17962	96%	1.2Easy	en
Engineering English	0.00	38	3235	2772	86%	2.6Easy	en
Enlarging Hash Tables	0.00	136	1304	1137	87%	2.6Easy	en
Erdős Numbers	0.00	261	407	320	79%	4.4Medium	en
Escape Plan	0.01	719	355	266	75%	5.5Hard	en
Estimating the Area of a Circle	0.00	49	4501	4266	95%	1.6Easy	en
Five, Six, Pick Up Sticks; Seven, Eight, Lay Them Straight	0.00	179	17	15	88%	3.7Medium	en
Forest Fires	0.17	773	120	96	80%	3.9Medium	en
Fouled files	0.00	32	47	43	91%	3.4Medium	en
Functional Fun	0.00	367	834	778	93%	2.1Easy	en
Fundamental Neighbors	0.00	116	733	627	86%	2.9Medium	en
Generalized Recursive Functions	0.02	280	445	372	84%	4.4Medium	en
Genetic Search	0.00	213	967	868	90%	2.9Medium	en
Gerrymandering	0.00	183	2136	2052	96%	1.6Easy	en
Golomb Rulers	0.01	275	787	700	89%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	110	84	76%	4.8Medium	en
Heliocentric	0.00	89	2201	2035	92%	2.2Easy	en
Hitting the Targets	0.00	173	2093	1973	94%	1.6Easy	en
How Many Digits?	0.00	71	2295	1819	79%	3.3Medium	en
Hurricane Danger!	0.00	199	508	432	85%	3.3Medium	en
Image Decoding	0.00	261	1183	962	81%	3.1Medium	en
Island Hopping	0.01	257	1908	1699	89%	2.4Easy	en
Juggling Patterns	0.00	234	498	369	74%	4.9Medium	en
Limited Correspondence	0.01	867	191	127	66%	6.6Hard	en
Loopy Cab Drivers	0.01	958	155	124	80%	5.9Hard	en
Loopy Transit	0.00	345	223	186	83%	3.6Medium	en
Managing Packaging	0.01	400	381	282	74%	4.5Medium	en
Mandelbrot	0.00	103	1190	1033	87%	2.7Easy	en
Matrix Inverse	0.00	93	1620	1362	84%	2.9Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	350	303	87%	3.9Medium	en
Maximizing Your Pay	0.00	484	212	164	77%	5.1Medium	en
Maze Movement	0.02	962	683	601	88%	3.2Medium	en
Metaprogramming	0.00	97	1729	1535	89%	2.0Easy	en
Missing Numbers	0.00	56	5385	4988	93%	1.7Easy	en
Multi-Touch Gesture Classification	0.00	2526	46	31	67%	7.0Hard	en
Music Your Way	0.00	151	1449	1345	93%	1.7Easy	en
Musical Notation	0.00	123	860	796	93%	2.2Easy	en
Name That Permutation	0.00	111	396	331	84%	4.2Medium	en
Notable Quotables	0.00	1300	41	20	49%	7.6Hard	en
Oddities	0.00	38	24169	23193	96%	1.5Easy	en
Out of Context	0.02	1267	26	14	54%	7.1Hard	en
Pachinko Probability	0.00	540	207	170	82%	5.1Medium	en
Pachyderm Peanut Packing	0.00	265	912	827	91%	2.8Medium	en
Page Layout	0.02	310	356	292	82%	5.6Hard	en
Parallel Analysis	0.08	102	179	150	84%	4.5Medium	en
Parsing Hex	0.00	36	1362	1196	88%	2.5Easy	en
Permutation Encryption	0.00	187	2106	1852	88%	2.1Easy	en
Polish Notation	0.00	122	653	507	78%	4.5Medium	en
Preludes	0.00	115	1638	1522	93%	2.0Easy	en
Primal Representation	0.02	119	779	634	81%	3.1Medium	en
Prime Reduction	0.03	160	1560	1374	88%	2.4Easy	en
Prime Spiral	0.00	666	337	289	86%	3.5Medium	en
Quick Estimates	0.00	18	8537	8092	95%	1.9Easy	en
Quite a Problem	0.00	31	2474	2253	91%	2.1Easy	en
Race Day	0.00	579	233	197	85%	3.6Medium	en
Random Walking in a Winter Wonderland	0.14	1091	11	6	55%	6.2Hard	en
Reachable Roads	0.00	266	2988	2752	92%	1.8Easy	en
RectSect	0.00	175	22	21	95%	3.1Medium	en
Reversing Roads	0.00	904	965	799	83%	3.3Medium	en
Robot Protection	0.01	286	712	645	91%	2.5Easy	en
Saving Daylight	0.00	76	1980	1791	90%	2.2Easy	en
Secure Doors	0.00	81	4411	4076	92%	1.7Easy	en
Self-Similar Strings	0.02	147	398	351	88%	3.0Medium	en
Selling Spatulas	0.00	458	600	376	63%	6.6Hard	en
Sierpiński Circumference	0.00	60	1136	996	88%	3.1Medium	en
Sneak Attack	0.00	970	69	33	48%	8.4Hard	en
Sort Two Numbers	0.00	6	15122	14463	96%	1.2Easy	en
Sort of Sorting	0.00	46	9522	8601	90%	1.7Easy	en
Statistics	0.00	69	7269	6700	92%	1.6Easy	en
Stirling's Approximation	0.00	86	354	293	83%	4.3Medium	en
Structural Differences	0.00	555	36	20	56%	6.9Hard	en
Substring Switcheroo	0.26	576	250	200	80%	5.4Medium	en
Sudokunique	0.01	1424	275	136	49%	8.2Hard	en
Support Vector Machine	0.02	95	354	270	76%	3.5Medium	en
Surveillance Squared	0.01	270	80	51	64%	6.3Hard	en
Synchronizing Lists	0.00	108	5097	4825	95%	1.6Easy	en
Texture Analysis	0.00	70	1818	1527	84%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	779	673	86%	2.5Easy	en
Transportation Planning	0.03	1157	229	193	84%	4.3Medium	en

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