Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	34735	18931	55%	1.3Easy	en
Adding Words	0.00	192	22289	5368	24%	3.7Medium	en
All Different Directions	0.00	197	2599	1193	46%	2.7Easy	en
BASIC Interpreter	0.00	422	3358	706	21%	5.3Medium	en
Bag of Tiles	0.02	254	2948	1180	40%	5.6Hard	en
Birthday Paradox	0.00	303	346	116	34%	5.4Medium	en
Bounding Robots	0.00	257	3916	2110	54%	2.0Easy	en
Cellular Merging	0.01	1602	129	17	13%	8.1Hard	en
Charting Progress	0.00	85	4223	1778	42%	2.1Easy	en
Chatter	0.10	611	679	313	46%	4.0Medium	en
Checking For Correctness	0.00	54	2822	813	29%	3.8Medium	en
Connect the Dots	0.00	596	2050	682	33%	3.6Medium	en
Convex Polygon Area	0.00	108	2739	1504	55%	1.9Easy	en
Counting Stars	0.00	255	16639	4721	28%	2.7Easy	en
Dart Scoring	0.00	790	1040	407	39%	4.2Medium	en
Das Blinkenlights	0.00	5	7293	3127	43%	1.7Easy	en
Deduplicating Files	0.01	245	4799	1392	29%	4.0Medium	en
Detailed Differences	0.00	5	22102	11098	50%	1.4Easy	en
Different Distances	0.00	78	5930	2920	49%	1.7Easy	en
Echo Echo Echo	0.00	5	34431	18940	55%	1.2Easy	en
Engineering English	0.00	51	7413	3180	43%	2.3Easy	en
Enlarging Hash Tables	0.00	136	4749	1527	32%	2.8Medium	en
Erdős Numbers	0.01	261	1392	417	30%	4.9Medium	en
Escape Plan	0.01	1045	1264	373	30%	5.4Medium	en
Estimating the Area of a Circle	0.00	5	7971	4457	56%	1.6Easy	en
Forest Fires	0.17	773	320	147	46%	2.8Medium	en
Functional Fun	0.00	367	1888	836	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	1851	713	39%	3.1Medium	en
Generalized Recursive Functions	0.02	280	1224	426	35%	4.5Medium	en
Genetic Search	0.00	213	1679	869	52%	2.2Easy	en
Gerrymandering	0.00	5	3283	2083	63%	1.6Easy	en
Golomb Rulers	0.02	325	1543	759	49%	3.0Medium	en
Hall O' Wee Mirrors	0.00	649	224	93	42%	4.9Medium	en
Heliocentric	0.00	89	4085	2062	50%	2.0Easy	en
Hitting the Targets	0.00	194	3087	1849	60%	1.6Easy	en
How Many Digits?	0.00	71	8588	2306	27%	4.2Medium	en
Hurricane Danger!	0.00	199	1569	484	31%	3.7Medium	en
Image Decoding	0.00	276	3623	902	25%	3.2Medium	en
Island Hopping	0.02	292	4968	2155	43%	2.4Easy	en
Juggling Patterns	0.00	300	1515	385	25%	5.8Hard	en
Limited Correspondence	0.03	867	1332	282	21%	6.7Hard	en
Loopy Cab Drivers	0.01	958	584	150	26%	6.4Hard	en
Loopy Transit	0.00	345	363	205	56%	3.6Medium	en
Managing Packaging	0.01	400	1082	423	39%	4.7Medium	en
Mandelbrot	0.00	103	3670	1133	31%	2.8Medium	en
Matrix Inverse	0.00	93	4376	1484	34%	3.2Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	954	406	43%	4.0Medium	en
Maximizing Your Pay	0.00	484	791	233	29%	5.2Medium	en
Maze Movement	0.02	962	1571	716	46%	3.5Medium	en
Metaprogramming	0.00	97	3932	1663	42%	2.1Easy	en
Missing Numbers	0.00	5	9943	5162	52%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	203	34	17%	8.0Hard	en
Music Your Way	0.00	151	2430	1207	50%	2.1Easy	en
Musical Notation	0.00	123	1686	831	49%	2.1Easy	en
Name That Permutation	0.00	111	943	368	39%	4.2Medium	en
Notable Quotables	0.00	1414	161	23	14%	7.7Hard	en
Oddities	0.00	5	46074	24230	53%	1.2Easy	en
Out of Context	0.03	1267	135	30	22%	7.2Hard	en
Pachinko Probability	0.00	540	490	193	39%	5.2Medium	en
Pachyderm Peanut Packing	0.00	265	1467	848	58%	2.0Easy	en
Page Layout	0.02	310	1578	456	29%	5.2Medium	en
Parallel Analysis	0.08	102	650	260	40%	4.6Medium	en
Parsing Hex	0.00	5	4248	1381	33%	2.6Easy	en
Permutation Encryption	0.00	209	5060	1882	37%	2.2Easy	en
Polish Notation	0.00	122	2278	603	26%	3.7Medium	en
Preludes	0.00	115	2980	1500	50%	1.9Easy	en
Primal Representation	0.02	158	2724	830	30%	4.3Medium	en
Prime Reduction	0.03	160	6294	1913	30%	2.6Easy	en
Prime Spiral	0.00	666	851	379	45%	3.2Medium	en
Quick Estimates	0.00	5	14897	8078	54%	1.6Easy	en
Quite a Problem	0.00	5	5836	2375	41%	2.0Easy	en
Race Day	0.00	782	618	263	43%	3.6Medium	en
Reachable Roads	0.00	266	6693	3368	50%	1.8Easy	en
Reversing Roads	0.00	904	3859	956	25%	3.6Medium	en
Robot Protection	0.02	286	2255	999	44%	2.6Easy	en
Saving Daylight	0.00	76	3615	1866	52%	2.1Easy	en
Secure Doors	0.00	81	8294	4080	49%	1.6Easy	en
Self-Similar Strings	0.02	147	2223	1178	53%	3.2Medium	en
Selling Spatulas	0.00	458	4122	530	13%	7.2Hard	en
Sierpiński Circumference	0.00	60	3128	1130	36%	3.0Medium	en
Sneak Attack	0.00	1322	493	47	10%	8.7Hard	en
Sort Two Numbers	0.00	5	30050	14678	49%	1.3Easy	en
Sort of Sorting	0.01	5	26321	11328	43%	1.9Easy	en
Statistics	0.00	69	16720	7138	43%	1.9Easy	en
Stirling's Approximation	0.00	86	1124	477	42%	4.4Medium	en
Structural Differences	0.01	555	88	21	24%	7.2Hard	en
Substring Switcheroo	0.26	576	783	245	31%	5.5Hard	en
Sudokunique	0.01	1810	1776	289	16%	8.6Hard	en
Support Vector Machine	0.02	5	1094	304	28%	4.0Medium	en
Surveillance Squared	0.01	808	289	48	17%	7.3Hard	en
Synchronizing Lists	0.00	108	8461	5046	60%	1.6Easy	en
Texture Analysis	0.00	70	4665	1790	38%	2.9Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1596	764	48%	2.6Easy	en
Transportation Planning	0.05	1157	641	209	33%	4.6Medium	en
Unicycle Counting	0.00	625	282	63	22%	7.3Hard	en
Variable Arithmetic	0.00	249	1949	789	40%	2.4Easy	en
Volume Amplification	0.09	214	1043	279	27%	6.3Hard	en
Where to Live?	0.00	123	889	323	36%	3.8Medium	en
Zipline	0.00	5	3396	1123	33%	3.6Medium	en