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	20638	19611	95%	1.2Easy	en
Adding Words	0.00	187	5950	4661	78%	2.9Medium	en
All Different Directions	0.00	197	1250	1075	86%	2.7Easy	en
BASIC Interpreter	0.00	422	603	446	74%	5.1Medium	en
Bag of Tiles	0.02	254	594	461	78%	4.8Medium	en
Birthday Paradox	0.00	249	151	118	78%	5.3Medium	en
Bounding Robots	0.00	244	2187	2027	93%	2.1Easy	en
Cellular Merging	0.01	1602	29	12	41%	8.2Hard	en
Charting Progress	0.00	85	1582	1449	92%	2.2Easy	en
Chatter	0.10	611	288	244	85%	3.9Medium	en
Checking For Correctness	0.00	54	816	682	84%	3.8Medium	en
Connect the Dots	0.00	576	726	633	87%	3.4Medium	en
Convex Polygon Area	0.00	108	1504	1394	93%	2.0Easy	en
Counting Stars	0.00	255	4191	3556	85%	2.6Easy	en
DNA Similarity	0.01	231	45	41	91%	2.6Easy	en
Dart Scoring	0.00	636	459	390	85%	3.3Medium	en
Das Blinkenlights	0.00	45	3328	3110	93%	1.6Easy	en
Deduplicating Files	0.01	245	1509	1167	77%	3.9Medium	en
Detailed Differences	0.00	51	11261	10841	96%	1.5Easy	en
Dicey Frequencies	0.01	336	25	19	76%	5.0Medium	en
Different Distances	0.00	78	3201	3005	94%	2.1Easy	en
Echo Echo Echo	0.00	6	19020	18292	96%	1.2Easy	en
Engineering English	0.00	38	3260	2796	86%	2.6Easy	en
Enlarging Hash Tables	0.00	136	1387	1219	88%	2.4Easy	en
Erdős Numbers	0.00	261	412	323	78%	4.4Medium	en
Escape Plan	0.01	719	370	279	75%	5.2Medium	en
Estimating the Area of a Circle	0.00	49	4536	4299	95%	1.5Easy	en
Five, Six, Pick Up Sticks; Seven, Eight, Lay Them Straight	0.00	179	19	16	84%	4.4Medium	en
Forest Fires	0.17	773	120	96	80%	3.8Medium	en
Fouled files	0.00	32	66	61	92%	2.8Medium	en
Functional Fun	0.00	367	842	784	93%	2.1Easy	en
Fundamental Neighbors	0.00	116	852	740	87%	2.4Easy	en
Generalized Recursive Functions	0.02	280	446	373	84%	4.3Medium	en
Genetic Search	0.00	213	979	877	90%	2.9Medium	en
Gerrymandering	0.00	183	2148	2064	96%	1.6Easy	en
Golomb Rulers	0.01	275	799	711	89%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	109	84	77%	4.7Medium	en
Heliocentric	0.00	89	2204	2038	92%	2.1Easy	en
Hitting the Targets	0.00	173	2103	1983	94%	1.6Easy	en
How Many Digits?	0.00	71	2309	1829	79%	3.3Medium	en
Hurricane Danger!	0.00	199	609	530	87%	2.9Medium	en
Image Decoding	0.00	253	1223	993	81%	3.1Medium	en
Island Hopping	0.01	173	1956	1741	89%	2.5Easy	en
Juggling Patterns	0.00	234	507	376	74%	4.8Medium	en
Limited Correspondence	0.00	867	195	129	66%	6.4Hard	en
Loopy Cab Drivers	0.01	958	156	125	80%	5.8Hard	en
Loopy Transit	0.00	345	224	187	83%	3.6Medium	en
Managing Packaging	0.01	400	389	290	75%	4.3Medium	en
Mandelbrot	0.00	103	1228	1069	87%	2.6Easy	en
Matrix Inverse	0.00	93	1642	1380	84%	2.8Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	351	304	87%	3.8Medium	en
Maximizing Your Pay	0.00	484	219	167	76%	5.1Medium	en
Maze Movement	0.02	962	702	618	88%	3.0Medium	en
Metaprogramming	0.00	97	1740	1546	89%	2.0Easy	en
Missing Numbers	0.00	56	5435	5034	93%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	45	30	67%	6.9Hard	en
Music Your Way	0.00	151	1461	1356	93%	1.8Easy	en
Musical Notation	0.00	123	863	799	93%	2.1Easy	en
Name That Permutation	0.00	111	403	336	83%	4.2Medium	en
Notable Quotables	0.00	1300	42	21	50%	6.9Hard	en
Oddities	0.00	38	24541	23559	96%	1.4Easy	en
Out of Context	0.02	1267	25	13	52%	7.1Hard	en
Pachinko Probability	0.00	540	215	177	82%	4.9Medium	en
Pachyderm Peanut Packing	0.00	265	920	834	91%	2.7Easy	en
Page Layout	0.02	310	389	317	81%	5.5Hard	en
Parallel Analysis	0.08	102	177	148	84%	4.4Medium	en
Parsing Hex	0.00	36	1373	1206	88%	2.4Easy	en
Permutation Encryption	0.00	187	2169	1909	88%	2.3Easy	en
Polish Notation	0.00	122	670	520	78%	4.5Medium	en
Preludes	0.00	115	1671	1549	93%	2.1Easy	en
Primal Representation	0.02	119	790	644	82%	3.0Medium	en
Prime Reduction	0.03	160	1575	1387	88%	2.4Easy	en
Prime Spiral	0.00	666	340	292	86%	3.4Medium	en
Quick Estimates	0.00	18	8587	8140	95%	1.8Easy	en
Quite a Problem	0.00	31	2495	2274	91%	2.0Easy	en
Race Day	0.00	579	232	196	84%	3.6Medium	en
Random Walking in a Winter Wonderland	0.12	842	12	7	58%	5.8Hard	en
Reachable Roads	0.00	266	3113	2859	92%	2.0Easy	en
RectSect	0.00	175	25	22	88%	4.3Medium	en
Reversing Roads	0.00	904	976	810	83%	3.2Medium	en
Robot Protection	0.01	286	731	664	91%	2.4Easy	en
Saving Daylight	0.00	76	1983	1794	90%	2.2Easy	en
Secure Doors	0.00	81	4434	4098	92%	1.7Easy	en
Self-Similar Strings	0.02	147	410	363	89%	2.9Medium	en
Selling Spatulas	0.00	458	610	383	63%	6.4Hard	en
Sierpiński Circumference	0.00	60	1140	999	88%	3.0Medium	en
Sneak Attack	0.00	970	70	34	49%	8.2Hard	en
Sort Two Numbers	0.00	6	15360	14691	96%	1.2Easy	en
Sort of Sorting	0.00	46	9759	8836	91%	1.6Easy	en
Statistics	0.00	69	7389	6805	92%	1.7Easy	en
Stirling's Approximation	0.00	86	358	297	83%	4.1Medium	en
Structural Differences	0.00	555	36	20	56%	6.9Hard	en
Substring Switcheroo	0.26	576	254	202	80%	5.5Hard	en
Sudokunique	0.01	1424	276	136	49%	8.1Hard	en
Support Vector Machine	0.02	95	355	270	76%	3.5Medium	en
Surveillance Squared	0.01	270	82	53	65%	5.9Hard	en
Synchronizing Lists	0.00	108	5134	4859	95%	1.7Easy	en
Texture Analysis	0.00	70	1821	1530	84%	3.7Medium	en
The Rectangles Are Surrounding Us!	0.00	123	799	689	86%	2.6Easy	en
Transportation Planning	0.03	1157	232	194	84%	4.3Medium	en

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