Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	40347	21588	54%	1.2Easy	en
Adding Words	0.00	192	26682	6181	23%	4.1Medium	en
All Different Directions	0.00	197	3390	1319	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4212	782	19%	5.1Medium	en
Bag of Tiles	0.02	254	3357	1291	38%	4.7Medium	en
Birthday Paradox	0.00	249	444	135	30%	5.4Medium	en
Bounding Robots	0.00	244	4157	2230	54%	2.1Easy	en
Cellular Merging	0.01	1602	156	18	12%	8.4Hard	en
Charting Progress	0.00	85	4467	1896	42%	2.2Easy	en
Chatter	0.10	611	807	350	43%	4.1Medium	en
Checking For Correctness	0.00	54	3134	907	29%	4.0Medium	en
Connect the Dots	0.00	596	2285	756	33%	3.5Medium	en
Convex Polygon Area	0.00	108	3098	1683	54%	2.0Easy	en
Counting Stars	0.00	255	18185	5158	28%	2.7Easy	en
Dart Scoring	0.00	636	1230	509	41%	3.7Medium	en
Das Blinkenlights	0.00	5	8060	3455	43%	1.7Easy	en
Deduplicating Files	0.01	245	5399	1533	28%	4.4Medium	en
Detailed Differences	0.00	5	24260	12049	50%	1.7Easy	en
Different Distances	0.00	78	7122	3335	47%	2.3Easy	en
Echo Echo Echo	0.00	5	37962	20719	55%	1.2Easy	en
Engineering English	0.00	51	7780	3377	43%	2.5Easy	en
Enlarging Hash Tables	0.00	136	5132	1649	32%	2.8Medium	en
Erdős Numbers	0.01	261	1550	464	30%	4.5Medium	en
Escape Plan	0.01	719	1402	407	29%	5.6Hard	en
Estimating the Area of a Circle	0.00	5	8502	4757	56%	1.6Easy	en
Forest Fires	0.17	773	409	163	40%	3.8Medium	en
Functional Fun	0.00	367	2154	956	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2304	874	38%	3.0Medium	en
Generalized Recursive Functions	0.02	280	1461	527	36%	4.4Medium	en
Genetic Search	0.00	213	2535	1092	43%	2.9Medium	en
Gerrymandering	0.00	5	3498	2186	62%	1.6Easy	en
Golomb Rulers	0.02	275	1872	895	48%	2.8Medium	en
Hall O' Wee Mirrors	0.00	339	268	103	38%	4.9Medium	en
Heliocentric	0.00	89	5261	2396	46%	2.2Easy	en
Hitting the Targets	0.00	173	3736	2174	58%	1.6Easy	en
How Many Digits?	0.00	71	9359	2562	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1787	560	31%	3.4Medium	en
Image Decoding	0.00	276	6508	1266	19%	3.7Medium	en
Island Hopping	0.01	257	6584	2668	41%	2.3Easy	en
Juggling Patterns	0.00	300	1999	504	25%	5.1Medium	en
Limited Correspondence	0.01	867	1950	307	16%	6.7Hard	en
Loopy Cab Drivers	0.01	958	692	175	25%	6.0Hard	en
Loopy Transit	0.00	345	417	222	53%	3.6Medium	en
Managing Packaging	0.01	400	1210	491	41%	4.6Medium	en
Mandelbrot	0.00	103	4052	1264	31%	2.8Medium	en
Matrix Inverse	0.00	93	4770	1614	34%	3.1Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1080	441	41%	3.9Medium	en
Maximizing Your Pay	0.00	484	875	251	29%	5.2Medium	en
Maze Movement	0.02	962	1988	898	45%	3.2Medium	en
Metaprogramming	0.00	97	4330	1832	42%	2.1Easy	en
Missing Numbers	0.00	5	10839	5564	51%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	251	40	16%	6.6Hard	en
Music Your Way	0.00	151	2903	1442	50%	1.9Easy	en
Musical Notation	0.00	123	1815	879	48%	2.1Easy	en
Name That Permutation	0.00	111	1091	430	39%	4.2Medium	en
Notable Quotables	0.00	1300	190	25	13%	7.7Hard	en
Oddities	0.00	5	50102	26001	52%	1.6Easy	en
Out of Context	0.02	1267	176	32	18%	7.1Hard	en
Pachinko Probability	0.00	540	533	202	38%	5.2Medium	en
Pachyderm Peanut Packing	0.00	265	2291	1069	47%	2.9Medium	en
Page Layout	0.02	310	1815	501	28%	5.6Hard	en
Parallel Analysis	0.08	102	692	273	39%	4.5Medium	en
Parsing Hex	0.00	5	4598	1537	33%	2.5Easy	en
Permutation Encryption	0.00	187	5428	2032	37%	2.3Easy	en
Polish Notation	0.00	122	3381	748	22%	5.7Hard	en
Preludes	0.00	115	3339	1662	50%	2.0Easy	en
Primal Representation	0.02	158	3154	1003	32%	3.0Medium	en
Prime Reduction	0.03	160	7103	2207	31%	2.5Easy	en
Prime Spiral	0.00	666	1042	448	43%	3.5Medium	en
Quick Estimates	0.00	5	16518	8849	54%	2.0Easy	en
Quite a Problem	0.00	5	6428	2646	41%	2.1Easy	en
Race Day	0.00	579	748	284	38%	3.7Medium	en
Reachable Roads	0.00	266	7402	3749	51%	1.8Easy	en
Reversing Roads	0.00	904	4551	1182	26%	3.4Medium	en
Robot Protection	0.01	286	2444	1107	45%	2.6Easy	en
Saving Daylight	0.00	76	3873	1985	51%	2.2Easy	en
Secure Doors	0.00	81	9548	4523	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2446	1320	54%	3.1Medium	en
Selling Spatulas	0.00	458	4554	597	13%	6.7Hard	en
Sierpiński Circumference	0.00	60	3384	1225	36%	3.0Medium	en
Sneak Attack	0.00	970	651	66	10%	8.9Hard	en
Sort Two Numbers	0.00	5	33178	16019	48%	1.3Easy	en
Sort of Sorting	0.00	5	28269	12194	43%	1.8Easy	en
Statistics	0.00	69	18347	7798	43%	1.7Easy	en
Stirling's Approximation	0.00	86	1346	542	40%	4.3Medium	en
Structural Differences	0.01	555	118	23	19%	7.5Hard	en
Substring Switcheroo	0.26	576	890	271	30%	5.5Hard	en
Sudokunique	0.01	1424	2299	349	15%	8.2Hard	en
Support Vector Machine	0.02	5	1272	369	29%	3.6Medium	en
Surveillance Squared	0.01	277	356	74	21%	6.8Hard	en
Synchronizing Lists	0.00	108	9312	5481	59%	1.7Easy	en
Texture Analysis	0.00	70	5358	1959	37%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1869	870	47%	2.5Easy	en
Transportation Planning	0.03	1157	812	263	32%	4.2Medium	en
Unicycle Counting	0.00	625	313	67	21%	7.6Hard	en
Variable Arithmetic	0.00	249	2123	856	40%	2.4Easy	en
Volume Amplification	0.06	214	1150	308	27%	6.2Hard	en
Where to Live?	0.00	123	962	344	36%	3.9Medium	en
Zipline	0.00	5	3567	1176	33%	3.6Medium	en