Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	36402	19745	54%	1.3Easy	en
Adding Words	0.00	192	22680	5443	24%	4.3Medium	en
All Different Directions	0.00	197	2641	1217	46%	2.7Easy	en
BASIC Interpreter	0.00	422	3422	718	21%	5.3Medium	en
Bag of Tiles	0.02	254	3011	1200	40%	5.7Hard	en
Birthday Paradox	0.00	303	357	118	33%	5.4Medium	en
Bounding Robots	0.00	257	3976	2139	54%	2.0Easy	en
Cellular Merging	0.01	1602	129	17	13%	8.1Hard	en
Charting Progress	0.00	85	4317	1829	42%	2.1Easy	en
Chatter	0.10	611	755	333	44%	4.1Medium	en
Checking For Correctness	0.00	54	2863	821	29%	3.9Medium	en
Connect the Dots	0.00	596	2094	700	33%	3.5Medium	en
Convex Polygon Area	0.00	108	2789	1529	55%	2.0Easy	en
Counting Stars	0.00	255	17241	4967	29%	2.6Easy	en
Dart Scoring	0.00	790	1044	411	39%	4.2Medium	en
Das Blinkenlights	0.00	5	7437	3194	43%	1.7Easy	en
Deduplicating Files	0.01	245	4954	1429	29%	4.4Medium	en
Detailed Differences	0.00	5	22705	11319	50%	1.5Easy	en
Different Distances	0.00	78	6008	2958	49%	1.7Easy	en
Echo Echo Echo	0.00	5	35654	19566	55%	1.2Easy	en
Engineering English	0.00	51	7486	3209	43%	2.6Easy	en
Enlarging Hash Tables	0.00	136	4817	1554	32%	2.8Medium	en
Erdős Numbers	0.01	261	1421	428	30%	4.8Medium	en
Escape Plan	0.01	1045	1306	383	29%	5.3Medium	en
Estimating the Area of a Circle	0.00	5	8040	4490	56%	1.6Easy	en
Forest Fires	0.17	773	321	148	46%	2.8Medium	en
Functional Fun	0.00	367	2053	900	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2125	794	37%	3.1Medium	en
Generalized Recursive Functions	0.02	280	1250	437	35%	4.5Medium	en
Genetic Search	0.00	213	1740	911	52%	2.1Easy	en
Gerrymandering	0.00	5	3335	2107	63%	1.6Easy	en
Golomb Rulers	0.02	325	1614	785	49%	2.9Medium	en
Hall O' Wee Mirrors	0.00	649	226	95	42%	4.8Medium	en
Heliocentric	0.00	89	4139	2082	50%	2.0Easy	en
Hitting the Targets	0.00	194	3277	1943	59%	1.5Easy	en
How Many Digits?	0.00	71	8940	2422	27%	3.5Medium	en
Hurricane Danger!	0.00	199	1623	502	31%	3.6Medium	en
Image Decoding	0.00	276	3846	946	25%	3.4Medium	en
Island Hopping	0.01	292	5128	2229	43%	2.5Easy	en
Juggling Patterns	0.00	300	1688	430	25%	5.8Hard	en
Limited Correspondence	0.03	867	1333	283	21%	6.6Hard	en
Loopy Cab Drivers	0.01	958	622	159	26%	6.2Hard	en
Loopy Transit	0.00	345	364	206	57%	3.7Medium	en
Managing Packaging	0.01	400	1091	430	39%	4.7Medium	en
Mandelbrot	0.00	103	3814	1194	31%	2.8Medium	en
Matrix Inverse	0.00	93	4422	1501	34%	3.2Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	961	412	43%	4.0Medium	en
Maximizing Your Pay	0.00	484	804	237	29%	5.2Medium	en
Maze Movement	0.02	962	1879	852	45%	3.3Medium	en
Metaprogramming	0.00	97	3978	1681	42%	2.2Easy	en
Missing Numbers	0.00	5	10151	5273	52%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	214	35	16%	7.6Hard	en
Music Your Way	0.00	151	2535	1260	50%	2.2Easy	en
Musical Notation	0.00	123	1711	839	49%	2.1Easy	en
Name That Permutation	0.00	111	958	375	39%	4.2Medium	en
Notable Quotables	0.00	1414	162	23	14%	7.9Hard	en
Oddities	0.00	5	46994	24721	53%	1.3Easy	en
Out of Context	0.03	1267	135	30	22%	7.2Hard	en
Pachinko Probability	0.00	540	492	195	40%	5.2Medium	en
Pachyderm Peanut Packing	0.00	265	1471	852	58%	2.0Easy	en
Page Layout	0.02	310	1649	461	28%	5.2Medium	en
Parallel Analysis	0.08	102	660	266	40%	4.6Medium	en
Parsing Hex	0.00	5	4280	1392	33%	2.7Easy	en
Permutation Encryption	0.00	209	5191	1929	37%	2.2Easy	en
Polish Notation	0.00	122	2338	620	27%	3.6Medium	en
Preludes	0.00	115	3108	1540	50%	2.0Easy	en
Primal Representation	0.02	158	2858	889	31%	4.4Medium	en
Prime Reduction	0.03	160	6573	2022	31%	2.6Easy	en
Prime Spiral	0.00	666	915	417	46%	3.2Medium	en
Quick Estimates	0.00	5	15256	8234	54%	1.6Easy	en
Quite a Problem	0.00	5	5951	2427	41%	2.1Easy	en
Race Day	0.00	782	637	266	42%	3.7Medium	en
Reachable Roads	0.00	266	7069	3565	50%	1.9Easy	en
Reversing Roads	0.00	904	3926	979	25%	3.7Medium	en
Robot Protection	0.02	286	2279	1015	45%	2.7Easy	en
Saving Daylight	0.00	76	3712	1892	51%	2.2Easy	en
Secure Doors	0.00	81	8469	4165	49%	1.6Easy	en
Self-Similar Strings	0.02	147	2234	1184	53%	3.2Medium	en
Selling Spatulas	0.00	458	4241	551	13%	7.1Hard	en
Sierpiński Circumference	0.00	60	3160	1140	36%	3.0Medium	en
Sneak Attack	0.00	1322	493	47	10%	8.7Hard	en
Sort Two Numbers	0.00	5	31256	15232	49%	1.3Easy	en
Sort of Sorting	0.01	5	26863	11589	43%	1.8Easy	en
Statistics	0.00	69	17151	7298	43%	1.8Easy	en
Stirling's Approximation	0.00	86	1128	480	43%	4.4Medium	en
Structural Differences	0.01	555	88	21	24%	7.2Hard	en
Substring Switcheroo	0.26	576	805	255	32%	5.6Hard	en
Sudokunique	0.01	1810	1786	290	16%	8.6Hard	en
Support Vector Machine	0.02	5	1112	316	28%	3.9Medium	en
Surveillance Squared	0.01	808	290	49	17%	7.3Hard	en
Synchronizing Lists	0.00	108	8532	5103	60%	1.6Easy	en
Texture Analysis	0.00	70	4752	1815	38%	3.1Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1655	791	48%	2.4Easy	en
Transportation Planning	0.05	1157	648	210	32%	4.6Medium	en
Unicycle Counting	0.00	625	282	63	22%	7.4Hard	en
Variable Arithmetic	0.00	249	1978	804	41%	2.4Easy	en
Volume Amplification	0.09	214	1044	280	27%	6.3Hard	en
Where to Live?	0.00	123	893	325	36%	3.8Medium	en
Zipline	0.00	5	3462	1143	33%	3.6Medium	en