Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	39841	21328	54%	1.2Easy	en
Adding Words	0.00	192	26539	6138	23%	4.2Medium	en
All Different Directions	0.00	197	3349	1297	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4187	775	19%	5.2Medium	en
Bag of Tiles	0.02	254	3162	1238	39%	6.0Hard	en
Birthday Paradox	0.00	249	414	128	31%	5.5Hard	en
Bounding Robots	0.00	257	4121	2210	54%	2.1Easy	en
Cellular Merging	0.01	1602	144	18	12%	8.0Hard	en
Charting Progress	0.00	85	4430	1874	42%	2.2Easy	en
Chatter	0.10	611	788	347	44%	4.1Medium	en
Checking For Correctness	0.00	54	3041	885	29%	4.1Medium	en
Connect the Dots	0.00	596	2242	745	33%	3.5Medium	en
Convex Polygon Area	0.00	108	3051	1648	54%	2.1Easy	en
Counting Stars	0.00	255	18108	5117	28%	2.8Medium	en
Dart Scoring	0.00	636	1207	500	41%	3.8Medium	en
Das Blinkenlights	0.00	5	7931	3392	43%	1.7Easy	en
Deduplicating Files	0.01	245	5318	1521	29%	4.3Medium	en
Detailed Differences	0.00	5	24144	11987	50%	1.7Easy	en
Different Distances	0.00	78	7072	3300	47%	2.3Easy	en
Echo Echo Echo	0.00	5	37701	20560	55%	1.2Easy	en
Engineering English	0.00	51	7717	3335	43%	2.6Easy	en
Enlarging Hash Tables	0.00	136	5084	1632	32%	2.7Easy	en
Erdős Numbers	0.01	261	1527	454	30%	4.7Medium	en
Escape Plan	0.01	719	1391	406	29%	5.7Hard	en
Estimating the Area of a Circle	0.00	5	8428	4717	56%	1.6Easy	en
Forest Fires	0.17	773	399	163	41%	3.8Medium	en
Functional Fun	0.00	367	2118	938	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2282	865	38%	3.0Medium	en
Generalized Recursive Functions	0.02	280	1444	524	36%	4.5Medium	en
Genetic Search	0.00	213	2486	1071	43%	3.0Medium	en
Gerrymandering	0.00	5	3477	2175	63%	1.6Easy	en
Golomb Rulers	0.02	275	1845	880	48%	2.8Medium	en
Hall O' Wee Mirrors	0.00	339	258	103	40%	4.9Medium	en
Heliocentric	0.00	89	5211	2359	45%	2.3Easy	en
Hitting the Targets	0.00	173	3691	2144	58%	1.6Easy	en
How Many Digits?	0.00	71	9305	2548	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1735	549	32%	3.5Medium	en
Image Decoding	0.00	276	6460	1255	19%	4.0Medium	en
Island Hopping	0.01	257	6491	2637	41%	2.4Easy	en
Juggling Patterns	0.00	300	1968	499	25%	5.1Medium	en
Limited Correspondence	0.01	867	1919	305	16%	6.7Hard	en
Loopy Cab Drivers	0.01	958	679	172	25%	6.0Hard	en
Loopy Transit	0.00	345	396	216	55%	3.7Medium	en
Managing Packaging	0.01	400	1144	453	40%	4.8Medium	en
Mandelbrot	0.00	103	4006	1246	31%	2.9Medium	en
Matrix Inverse	0.00	93	4723	1592	34%	3.3Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1040	431	41%	4.0Medium	en
Maximizing Your Pay	0.00	484	833	242	29%	5.3Medium	en
Maze Movement	0.02	962	1962	889	45%	3.3Medium	en
Metaprogramming	0.00	97	4266	1798	42%	2.1Easy	en
Missing Numbers	0.00	5	10692	5506	51%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	238	38	16%	6.7Hard	en
Music Your Way	0.00	151	2801	1384	49%	1.9Easy	en
Musical Notation	0.00	123	1788	870	49%	2.2Easy	en
Name That Permutation	0.00	111	1047	421	40%	4.3Medium	en
Notable Quotables	0.00	1300	180	25	14%	7.8Hard	en
Oddities	0.00	5	49864	25865	52%	1.6Easy	en
Out of Context	0.02	1267	166	32	19%	7.2Hard	en
Pachinko Probability	0.00	540	519	199	38%	5.3Medium	en
Pachyderm Peanut Packing	0.00	265	2209	1052	48%	3.1Medium	en
Page Layout	0.02	310	1775	491	28%	5.7Hard	en
Parallel Analysis	0.08	102	680	271	40%	4.6Medium	en
Parsing Hex	0.00	5	4574	1525	33%	2.6Easy	en
Permutation Encryption	0.00	187	5391	2023	38%	2.2Easy	en
Polish Notation	0.00	122	3350	733	22%	5.9Hard	en
Preludes	0.00	115	3243	1621	50%	2.0Easy	en
Primal Representation	0.02	158	3093	978	32%	3.9Medium	en
Prime Reduction	0.03	160	7076	2198	31%	2.5Easy	en
Prime Spiral	0.00	666	1023	443	43%	3.5Medium	en
Quick Estimates	0.00	5	16371	8756	53%	2.0Easy	en
Quite a Problem	0.00	5	6381	2613	41%	2.1Easy	en
Race Day	0.00	579	732	283	39%	3.7Medium	en
Reachable Roads	0.00	266	7350	3714	51%	1.8Easy	en
Reversing Roads	0.00	904	4471	1146	26%	3.6Medium	en
Robot Protection	0.01	286	2419	1091	45%	2.7Easy	en
Saving Daylight	0.00	76	3837	1971	51%	2.2Easy	en
Secure Doors	0.00	81	9469	4486	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2418	1309	54%	3.2Medium	en
Selling Spatulas	0.00	458	4475	583	13%	6.9Hard	en
Sierpiński Circumference	0.00	60	3343	1211	36%	3.0Medium	en
Sneak Attack	0.00	970	581	64	11%	9.0Hard	en
Sort Two Numbers	0.00	5	32990	15925	48%	1.3Easy	en
Sort of Sorting	0.00	5	28059	12080	43%	1.8Easy	en
Statistics	0.00	69	18006	7663	43%	1.7Easy	en
Stirling's Approximation	0.00	86	1323	538	41%	4.4Medium	en
Structural Differences	0.01	555	107	23	21%	7.5Hard	en
Substring Switcheroo	0.26	576	869	269	31%	5.6Hard	en
Sudokunique	0.01	1424	2287	348	15%	8.3Hard	en
Support Vector Machine	0.02	5	1215	347	29%	3.7Medium	en
Surveillance Squared	0.01	277	343	72	21%	6.9Hard	en
Synchronizing Lists	0.00	108	9162	5392	59%	1.8Easy	en
Texture Analysis	0.00	70	5318	1938	36%	4.0Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1836	860	47%	2.5Easy	en
Transportation Planning	0.03	1157	750	240	32%	4.3Medium	en
Unicycle Counting	0.00	625	302	67	22%	7.6Hard	en
Variable Arithmetic	0.00	249	2100	845	40%	2.4Easy	en
Volume Amplification	0.06	214	1131	306	27%	6.2Hard	en
Where to Live?	0.00	123	943	339	36%	3.9Medium	en
Zipline	0.00	5	3547	1170	33%	3.6Medium	en