Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	35543	19325	54%	1.3Easy	en
Adding Words	0.00	192	22462	5407	24%	4.0Medium	en
All Different Directions	0.00	197	2615	1202	46%	2.7Easy	en
BASIC Interpreter	0.00	422	3377	714	21%	5.2Medium	en
Bag of Tiles	0.02	254	2980	1189	40%	5.7Hard	en
Birthday Paradox	0.00	303	354	118	33%	5.3Medium	en
Bounding Robots	0.00	257	3943	2123	54%	2.0Easy	en
Cellular Merging	0.01	1602	129	17	13%	8.0Hard	en
Charting Progress	0.00	85	4292	1818	42%	2.1Easy	en
Chatter	0.10	611	693	321	46%	4.0Medium	en
Checking For Correctness	0.00	54	2854	817	29%	3.9Medium	en
Connect the Dots	0.00	596	2065	688	33%	3.6Medium	en
Convex Polygon Area	0.00	108	2776	1517	55%	2.1Easy	en
Counting Stars	0.00	255	17033	4892	29%	2.5Easy	en
Dart Scoring	0.00	790	1042	409	39%	4.2Medium	en
Das Blinkenlights	0.00	5	7373	3160	43%	1.7Easy	en
Deduplicating Files	0.01	245	4917	1418	29%	4.2Medium	en
Detailed Differences	0.00	5	22420	11222	50%	1.5Easy	en
Different Distances	0.00	78	5956	2930	49%	1.7Easy	en
Echo Echo Echo	0.00	5	35122	19277	55%	1.2Easy	en
Engineering English	0.00	51	7472	3200	43%	2.7Easy	en
Enlarging Hash Tables	0.00	136	4795	1539	32%	2.8Medium	en
Erdős Numbers	0.01	261	1405	422	30%	4.8Medium	en
Escape Plan	0.01	1045	1304	382	29%	5.3Medium	en
Estimating the Area of a Circle	0.00	5	7990	4467	56%	1.6Easy	en
Forest Fires	0.17	773	320	147	46%	2.8Medium	en
Functional Fun	0.00	367	2053	890	43%	2.1Easy	en
Fundamental Neighbors	0.00	116	2070	780	38%	3.0Medium	en
Generalized Recursive Functions	0.02	280	1246	435	35%	4.5Medium	en
Genetic Search	0.00	213	1708	885	52%	2.1Easy	en
Gerrymandering	0.00	5	3295	2090	63%	1.6Easy	en
Golomb Rulers	0.02	325	1611	777	48%	2.9Medium	en
Hall O' Wee Mirrors	0.00	649	225	94	42%	4.9Medium	en
Heliocentric	0.00	89	4111	2069	50%	2.0Easy	en
Hitting the Targets	0.00	194	3227	1918	59%	1.6Easy	en
How Many Digits?	0.00	71	8882	2396	27%	3.5Medium	en
Hurricane Danger!	0.00	199	1607	499	31%	3.6Medium	en
Image Decoding	0.00	276	3738	922	25%	3.3Medium	en
Island Hopping	0.02	292	5046	2199	44%	2.4Easy	en
Juggling Patterns	0.00	300	1600	407	25%	5.8Hard	en
Limited Correspondence	0.03	867	1332	282	21%	6.7Hard	en
Loopy Cab Drivers	0.01	958	606	157	26%	6.2Hard	en
Loopy Transit	0.00	345	364	206	57%	3.7Medium	en
Managing Packaging	0.01	400	1089	429	39%	4.6Medium	en
Mandelbrot	0.00	103	3685	1141	31%	2.8Medium	en
Matrix Inverse	0.00	93	4412	1496	34%	3.2Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	958	409	43%	4.0Medium	en
Maximizing Your Pay	0.00	484	796	235	30%	5.2Medium	en
Maze Movement	0.02	962	1804	812	45%	3.3Medium	en
Metaprogramming	0.00	97	3942	1671	42%	2.1Easy	en
Missing Numbers	0.00	5	9986	5191	52%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	211	34	16%	8.2Hard	en
Music Your Way	0.00	151	2492	1236	50%	2.2Easy	en
Musical Notation	0.00	123	1698	836	49%	2.1Easy	en
Name That Permutation	0.00	111	952	373	39%	4.2Medium	en
Notable Quotables	0.00	1414	161	23	14%	7.7Hard	en
Oddities	0.00	5	46512	24448	53%	1.3Easy	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	1470	851	58%	2.0Easy	en
Page Layout	0.02	310	1579	457	29%	5.2Medium	en
Parallel Analysis	0.08	102	660	266	40%	4.6Medium	en
Parsing Hex	0.00	5	4249	1382	33%	2.7Easy	en
Permutation Encryption	0.00	209	5133	1907	37%	2.2Easy	en
Polish Notation	0.00	122	2292	607	26%	3.7Medium	en
Preludes	0.00	115	3067	1531	50%	2.0Easy	en
Primal Representation	0.02	158	2732	838	31%	4.3Medium	en
Prime Reduction	0.03	160	6503	1989	31%	2.6Easy	en
Prime Spiral	0.00	666	880	397	45%	3.2Medium	en
Quick Estimates	0.00	5	15055	8149	54%	1.5Easy	en
Quite a Problem	0.00	5	5910	2403	41%	2.1Easy	en
Race Day	0.00	782	626	265	42%	3.6Medium	en
Reachable Roads	0.00	266	6947	3503	50%	1.8Easy	en
Reversing Roads	0.00	904	3889	961	25%	3.7Medium	en
Robot Protection	0.02	286	2263	1007	44%	2.6Easy	en
Saving Daylight	0.00	76	3651	1879	51%	2.2Easy	en
Secure Doors	0.00	81	8366	4117	49%	1.7Easy	en
Self-Similar Strings	0.02	147	2230	1182	53%	3.2Medium	en
Selling Spatulas	0.00	458	4170	538	13%	7.2Hard	en
Sierpiński Circumference	0.00	60	3135	1135	36%	3.0Medium	en
Sneak Attack	0.00	1322	493	47	10%	8.7Hard	en
Sort Two Numbers	0.00	5	30342	14831	49%	1.3Easy	en
Sort of Sorting	0.01	5	26642	11501	43%	1.7Easy	en
Statistics	0.00	69	16903	7208	43%	1.9Easy	en
Stirling's Approximation	0.00	86	1124	477	42%	4.5Medium	en
Structural Differences	0.01	555	88	21	24%	7.2Hard	en
Substring Switcheroo	0.26	576	793	248	31%	5.6Hard	en
Sudokunique	0.01	1810	1781	290	16%	8.6Hard	en
Support Vector Machine	0.02	5	1101	307	28%	4.0Medium	en
Surveillance Squared	0.01	808	290	49	17%	7.3Hard	en
Synchronizing Lists	0.00	108	8476	5058	60%	1.6Easy	en
Texture Analysis	0.00	70	4693	1799	38%	3.0Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1620	775	48%	2.6Easy	en
Transportation Planning	0.05	1157	648	210	32%	4.6Medium	en
Unicycle Counting	0.00	625	282	63	22%	7.3Hard	en
Variable Arithmetic	0.00	249	1955	794	41%	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	3434	1138	33%	3.6Medium	en