Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	40813	21802	53%	1.2Easy	en
Adding Words	0.00	192	26828	6236	23%	3.6Medium	en
All Different Directions	0.00	197	3413	1322	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4255	785	18%	5.2Medium	en
Bag of Tiles	0.02	254	3405	1300	38%	4.7Medium	en
Birthday Paradox	0.00	249	444	135	30%	5.3Medium	en
Bounding Robots	0.00	244	4166	2237	54%	2.0Easy	en
Cellular Merging	0.01	1602	261	21	8%	8.9Hard	en
Charting Progress	0.00	85	4479	1901	42%	2.2Easy	en
Chatter	0.10	611	829	360	43%	4.1Medium	en
Checking For Correctness	0.00	54	3152	914	29%	3.9Medium	en
Connect the Dots	0.00	596	2300	759	33%	3.5Medium	en
Convex Polygon Area	0.00	108	3107	1691	54%	2.0Easy	en
Counting Stars	0.00	255	18208	5166	28%	2.6Easy	en
Dart Scoring	0.00	636	1246	514	41%	3.6Medium	en
Das Blinkenlights	0.00	5	8124	3469	43%	1.6Easy	en
Deduplicating Files	0.01	245	5422	1542	28%	4.4Medium	en
Detailed Differences	0.00	5	24300	12072	50%	1.7Easy	en
Different Distances	0.00	78	7143	3347	47%	2.2Easy	en
Echo Echo Echo	0.00	5	38290	20862	54%	1.2Easy	en
Engineering English	0.00	51	7799	3390	43%	2.5Easy	en
Enlarging Hash Tables	0.00	136	5173	1669	32%	2.7Easy	en
Erdős Numbers	0.00	261	1601	472	29%	4.5Medium	en
Escape Plan	0.01	719	1408	409	29%	5.5Hard	en
Estimating the Area of a Circle	0.00	5	8516	4763	56%	1.5Easy	en
Forest Fires	0.17	773	428	163	38%	4.1Medium	en
Functional Fun	0.00	367	2160	960	44%	2.0Easy	en
Fundamental Neighbors	0.00	116	2311	878	38%	2.9Medium	en
Generalized Recursive Functions	0.02	280	1472	536	36%	4.3Medium	en
Genetic Search	0.00	213	2545	1101	43%	2.9Medium	en
Gerrymandering	0.00	5	3529	2191	62%	1.6Easy	en
Golomb Rulers	0.01	275	1892	908	48%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	271	104	38%	4.6Medium	en
Heliocentric	0.00	89	5274	2404	46%	2.2Easy	en
Hitting the Targets	0.00	173	3745	2181	58%	1.6Easy	en
How Many Digits?	0.00	71	9375	2565	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1807	571	32%	3.3Medium	en
Image Decoding	0.00	276	6555	1271	19%	3.6Medium	en
Island Hopping	0.01	257	6616	2684	41%	2.4Easy	en
Juggling Patterns	0.00	262	2094	541	26%	4.9Medium	en
Limited Correspondence	0.01	867	1956	307	16%	6.8Hard	en
Loopy Cab Drivers	0.01	958	693	175	25%	6.0Hard	en
Loopy Transit	0.00	345	420	223	53%	3.6Medium	en
Managing Packaging	0.01	400	1213	492	41%	4.5Medium	en
Mandelbrot	0.00	103	4075	1274	31%	2.7Easy	en
Matrix Inverse	0.00	93	4854	1633	34%	2.9Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1083	443	41%	3.9Medium	en
Maximizing Your Pay	0.00	484	885	252	28%	5.1Medium	en
Maze Movement	0.02	962	2007	906	45%	3.2Medium	en
Metaprogramming	0.00	97	4340	1841	42%	2.1Easy	en
Missing Numbers	0.00	5	10863	5581	51%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	257	41	16%	5.9Hard	en
Music Your Way	0.00	151	2941	1456	50%	1.9Easy	en
Musical Notation	0.00	123	1819	880	48%	2.1Easy	en
Name That Permutation	0.00	111	1098	434	40%	4.2Medium	en
Notable Quotables	0.00	1300	196	29	15%	7.7Hard	en
Oddities	0.00	5	50273	26071	52%	1.5Easy	en
Out of Context	0.02	1267	179	32	18%	7.3Hard	en
Pachinko Probability	0.00	540	538	204	38%	5.1Medium	en
Pachyderm Peanut Packing	0.00	265	2297	1072	47%	2.9Medium	en
Page Layout	0.02	310	1817	502	28%	5.6Hard	en
Parallel Analysis	0.08	102	711	281	40%	4.4Medium	en
Parsing Hex	0.00	5	4625	1548	33%	2.5Easy	en
Permutation Encryption	0.00	187	5477	2051	37%	2.3Easy	en
Polish Notation	0.00	122	3386	751	22%	5.6Hard	en
Preludes	0.00	115	3374	1669	49%	2.0Easy	en
Primal Representation	0.02	120	3176	1014	32%	2.9Medium	en
Prime Reduction	0.03	160	7109	2212	31%	2.4Easy	en
Prime Spiral	0.00	666	1048	448	43%	3.5Medium	en
Quick Estimates	0.00	5	16544	8862	54%	1.9Easy	en
Quite a Problem	0.00	5	6468	2661	41%	2.0Easy	en
Race Day	0.00	579	764	284	37%	3.7Medium	en
Reachable Roads	0.00	266	7463	3781	51%	1.8Easy	en
Reversing Roads	0.00	904	4561	1187	26%	3.3Medium	en
Robot Protection	0.01	286	2473	1128	46%	2.5Easy	en
Saving Daylight	0.00	76	3886	1992	51%	2.2Easy	en
Secure Doors	0.00	81	9592	4548	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2457	1329	54%	3.0Medium	en
Selling Spatulas	0.00	458	4615	602	13%	6.6Hard	en
Sierpiński Circumference	0.00	60	3391	1229	36%	3.0Medium	en
Sneak Attack	0.00	970	661	66	10%	8.9Hard	en
Sort Two Numbers	0.00	5	33476	16155	48%	1.2Easy	en
Sort of Sorting	0.00	5	28390	12235	43%	1.7Easy	en
Statistics	0.00	69	18449	7850	43%	1.6Easy	en
Stirling's Approximation	0.00	86	1348	544	40%	4.2Medium	en
Structural Differences	0.01	555	120	24	20%	6.7Hard	en
Substring Switcheroo	0.26	576	893	274	31%	5.5Hard	en
Sudokunique	0.01	1424	2299	349	15%	8.2Hard	en
Support Vector Machine	0.02	5	1284	381	30%	3.6Medium	en
Surveillance Squared	0.01	277	362	77	21%	6.9Hard	en
Synchronizing Lists	0.00	108	9354	5492	59%	1.8Easy	en
Texture Analysis	0.00	70	5362	1961	37%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1890	877	46%	2.5Easy	en
Transportation Planning	0.03	1157	820	264	32%	4.2Medium	en
Unicycle Counting	0.00	625	317	68	21%	7.6Hard	en
Variable Arithmetic	0.00	249	2130	861	40%	2.3Easy	en
Volume Amplification	0.06	214	1156	309	27%	6.1Hard	en
Where to Live?	0.00	123	981	353	36%	3.8Medium	en
Zipline	0.00	5	3574	1178	33%	3.5Medium	en