Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	39501	21147	54%	1.2Easy	en
Adding Words	0.00	192	26469	6116	23%	4.3Medium	en
All Different Directions	0.00	197	3336	1295	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4180	771	18%	5.3Medium	en
Bag of Tiles	0.02	254	3123	1227	39%	6.0Hard	en
Birthday Paradox	0.00	303	401	125	31%	5.6Hard	en
Bounding Robots	0.00	257	4116	2208	54%	2.1Easy	en
Cellular Merging	0.01	1602	141	18	13%	8.0Hard	en
Charting Progress	0.00	85	4422	1870	42%	2.3Easy	en
Chatter	0.10	611	783	345	44%	4.1Medium	en
Checking For Correctness	0.00	54	3021	881	29%	4.1Medium	en
Connect the Dots	0.00	596	2231	739	33%	3.6Medium	en
Convex Polygon Area	0.00	108	3034	1636	54%	2.1Easy	en
Counting Stars	0.00	255	18091	5109	28%	2.9Medium	en
Dart Scoring	0.00	636	1176	479	41%	3.9Medium	en
Das Blinkenlights	0.00	5	7926	3388	43%	1.6Easy	en
Deduplicating Files	0.01	245	5298	1516	29%	4.3Medium	en
Detailed Differences	0.00	5	24017	11913	50%	1.8Easy	en
Different Distances	0.00	78	6869	3213	47%	2.6Easy	en
Echo Echo Echo	0.00	5	37523	20488	55%	1.2Easy	en
Engineering English	0.00	51	7710	3332	43%	2.6Easy	en
Enlarging Hash Tables	0.00	136	5071	1624	32%	2.7Easy	en
Erdős Numbers	0.01	261	1489	447	30%	4.9Medium	en
Escape Plan	0.01	719	1387	405	29%	5.7Hard	en
Estimating the Area of a Circle	0.00	5	8327	4669	56%	1.6Easy	en
Forest Fires	0.17	773	396	163	41%	3.8Medium	en
Functional Fun	0.00	367	2108	933	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2234	844	38%	3.0Medium	en
Generalized Recursive Functions	0.02	280	1437	521	36%	4.5Medium	en
Genetic Search	0.00	213	2447	1057	43%	2.9Medium	en
Gerrymandering	0.00	5	3465	2173	63%	1.6Easy	en
Golomb Rulers	0.02	325	1817	865	48%	2.9Medium	en
Hall O' Wee Mirrors	0.00	339	255	103	40%	4.9Medium	en
Heliocentric	0.00	89	5191	2352	45%	2.3Easy	en
Hitting the Targets	0.00	173	3544	2081	59%	1.5Easy	en
How Many Digits?	0.00	71	9304	2547	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1728	547	32%	3.5Medium	en
Image Decoding	0.00	276	6348	1236	19%	4.3Medium	en
Island Hopping	0.01	257	6156	2486	40%	3.6Medium	en
Juggling Patterns	0.00	300	1952	496	25%	5.2Medium	en
Limited Correspondence	0.01	867	1907	305	16%	6.7Hard	en
Loopy Cab Drivers	0.01	958	675	171	25%	6.1Hard	en
Loopy Transit	0.00	345	392	215	55%	3.7Medium	en
Managing Packaging	0.01	400	1138	452	40%	4.7Medium	en
Mandelbrot	0.00	103	4002	1246	31%	2.9Medium	en
Matrix Inverse	0.00	93	4683	1588	34%	3.3Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1036	430	42%	4.0Medium	en
Maximizing Your Pay	0.00	484	830	242	29%	5.3Medium	en
Maze Movement	0.02	962	1955	885	45%	3.3Medium	en
Metaprogramming	0.00	97	4250	1789	42%	2.2Easy	en
Missing Numbers	0.00	5	10658	5493	52%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	235	38	16%	6.7Hard	en
Music Your Way	0.00	151	2761	1355	49%	1.9Easy	en
Musical Notation	0.00	123	1783	869	49%	2.2Easy	en
Name That Permutation	0.00	111	1034	414	40%	4.3Medium	en
Notable Quotables	0.00	1300	177	25	14%	7.8Hard	en
Oddities	0.00	5	49782	25818	52%	1.7Easy	en
Out of Context	0.02	1267	152	32	21%	7.1Hard	en
Pachinko Probability	0.00	540	516	199	39%	5.3Medium	en
Pachyderm Peanut Packing	0.00	265	2194	1047	48%	3.1Medium	en
Page Layout	0.02	310	1772	491	28%	5.7Hard	en
Parallel Analysis	0.08	102	677	271	40%	4.6Medium	en
Parsing Hex	0.00	5	4574	1524	33%	2.6Easy	en
Permutation Encryption	0.00	187	5378	2019	38%	2.2Easy	en
Polish Notation	0.00	122	3344	731	22%	5.8Hard	en
Preludes	0.00	115	3218	1608	50%	2.0Easy	en
Primal Representation	0.02	158	3081	974	32%	3.9Medium	en
Prime Reduction	0.03	160	7061	2187	31%	2.6Easy	en
Prime Spiral	0.00	666	1016	442	44%	3.5Medium	en
Quick Estimates	0.00	5	16291	8733	54%	2.0Easy	en
Quite a Problem	0.00	5	6363	2601	41%	2.1Easy	en
Race Day	0.00	579	730	283	39%	3.7Medium	en
Reachable Roads	0.00	266	7270	3675	51%	1.9Easy	en
Reversing Roads	0.00	904	4433	1126	25%	3.6Medium	en
Robot Protection	0.02	286	2397	1079	45%	2.7Easy	en
Saving Daylight	0.00	76	3825	1965	51%	2.2Easy	en
Secure Doors	0.00	81	9458	4479	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2414	1308	54%	3.2Medium	en
Selling Spatulas	0.00	458	4455	574	13%	7.0Hard	en
Sierpiński Circumference	0.00	60	3340	1211	36%	3.0Medium	en
Sneak Attack	0.00	970	579	64	11%	9.0Hard	en
Sort Two Numbers	0.00	5	32845	15865	48%	1.2Easy	en
Sort of Sorting	0.01	5	27750	11948	43%	1.8Easy	en
Statistics	0.00	69	17806	7577	43%	1.8Easy	en
Stirling's Approximation	0.00	86	1315	534	41%	4.4Medium	en
Structural Differences	0.01	555	105	23	22%	7.5Hard	en
Substring Switcheroo	0.26	576	865	267	31%	5.6Hard	en
Sudokunique	0.01	1810	2280	346	15%	8.3Hard	en
Support Vector Machine	0.02	5	1213	346	29%	3.7Medium	en
Surveillance Squared	0.01	277	341	72	21%	6.9Hard	en
Synchronizing Lists	0.00	108	9129	5361	59%	1.8Easy	en
Texture Analysis	0.00	70	5290	1930	36%	4.0Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1828	858	47%	2.5Easy	en
Transportation Planning	0.03	1157	696	225	32%	4.2Medium	en
Unicycle Counting	0.00	625	300	67	22%	7.6Hard	en
Variable Arithmetic	0.00	249	2095	843	40%	2.4Easy	en
Volume Amplification	0.06	214	1126	305	27%	6.2Hard	en
Where to Live?	0.00	123	939	339	36%	3.8Medium	en
Zipline	0.00	5	3543	1168	33%	3.6Medium	en