Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	41174	21978	53%	1.2Easy	en
Adding Words	0.00	187	26881	6264	23%	3.5Medium	en
All Different Directions	0.00	197	3428	1324	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4304	804	19%	5.2Medium	en
Bag of Tiles	0.02	254	3417	1301	38%	4.7Medium	en
Birthday Paradox	0.00	249	444	135	30%	5.4Medium	en
Bounding Robots	0.00	244	4172	2242	54%	2.0Easy	en
Cellular Merging	0.01	1602	308	30	10%	8.7Hard	en
Charting Progress	0.00	85	4481	1903	42%	2.2Easy	en
Chatter	0.10	611	833	363	44%	4.0Medium	en
Checking For Correctness	0.00	54	3157	917	29%	3.9Medium	en
Connect the Dots	0.00	596	2325	761	33%	3.6Medium	en
Convex Polygon Area	0.00	108	3114	1697	54%	2.0Easy	en
Counting Stars	0.00	255	18214	5167	28%	2.6Easy	en
DNA Similarity	0.01	386	22	15	68%	2.6Easy	en
Dart Scoring	0.00	636	1249	515	41%	3.6Medium	en
Das Blinkenlights	0.00	5	8140	3474	43%	1.6Easy	en
Deduplicating Files	0.01	245	5428	1541	28%	4.4Medium	en
Detailed Differences	0.00	5	24392	12110	50%	1.6Easy	en
Dicey Frequencies	--	--	0	0	--	4.0Medium	en
Different Distances	0.00	78	7144	3348	47%	2.2Easy	en
Echo Echo Echo	0.00	5	38487	20945	54%	1.2Easy	en
Engineering English	0.00	5	7801	3391	43%	2.5Easy	en
Enlarging Hash Tables	0.00	136	5190	1678	32%	2.7Easy	en
Erdős Numbers	0.00	261	1601	472	29%	4.5Medium	en
Escape Plan	0.01	719	1410	410	29%	5.5Hard	en
Estimating the Area of a Circle	0.00	5	8577	4794	56%	1.5Easy	en
Five, Six, Pick Up Sticks; Seven, Eight, Lay Them Straight	0.01	489	32	14	44%	3.4Medium	en
Forest Fires	0.17	773	428	163	38%	4.1Medium	en
Fouled files	0.00	5	40	25	62%	2.0Easy	en
Functional Fun	0.00	367	2169	959	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2315	881	38%	2.9Medium	en
Generalized Recursive Functions	0.02	280	1473	536	36%	4.4Medium	en
Genetic Search	0.00	213	2572	1111	43%	2.8Medium	en
Gerrymandering	0.00	5	3533	2193	62%	1.6Easy	en
Golomb Rulers	0.01	275	1902	911	48%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	271	104	38%	4.7Medium	en
Heliocentric	0.00	89	5279	2406	46%	2.2Easy	en
Hitting the Targets	0.00	173	3753	2187	58%	1.6Easy	en
How Many Digits?	0.00	71	9378	2567	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1839	575	31%	3.3Medium	en
Image Decoding	0.00	276	6619	1286	19%	3.6Medium	en
Island Hopping	0.01	257	6624	2687	41%	2.4Easy	en
Juggling Patterns	0.00	262	2102	544	26%	4.8Medium	en
Limited Correspondence	0.01	867	1972	308	16%	6.7Hard	en
Loopy Cab Drivers	0.01	958	694	176	25%	5.9Hard	en
Loopy Transit	0.00	345	422	224	53%	3.6Medium	en
Managing Packaging	0.01	400	1213	492	41%	4.5Medium	en
Mandelbrot	0.00	103	4090	1279	31%	2.7Easy	en
Matrix Inverse	0.00	93	4854	1633	34%	2.9Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1086	446	41%	3.9Medium	en
Maximizing Your Pay	0.00	484	886	253	29%	5.1Medium	en
Maze Movement	0.02	962	2008	907	45%	3.1Medium	en
Metaprogramming	0.00	97	4343	1842	42%	2.1Easy	en
Missing Numbers	0.00	5	10875	5586	51%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	259	41	16%	6.5Hard	en
Music Your Way	0.00	151	2958	1465	50%	1.9Easy	en
Musical Notation	0.00	123	1834	882	48%	2.1Easy	en
Name That Permutation	0.00	111	1098	434	40%	4.1Medium	en
Notable Quotables	0.00	1300	203	30	15%	7.2Hard	en
Oddities	0.00	5	50390	26103	52%	1.5Easy	en
Out of Context	0.02	1267	196	33	17%	6.6Hard	en
Pachinko Probability	0.00	540	539	204	38%	5.1Medium	en
Pachyderm Peanut Packing	0.00	265	2301	1073	47%	2.9Medium	en
Page Layout	0.02	310	1818	502	28%	5.6Hard	en
Parallel Analysis	0.08	102	712	281	39%	4.4Medium	en
Parsing Hex	0.00	5	4631	1551	33%	2.5Easy	en
Permutation Encryption	0.00	187	5504	2057	37%	2.3Easy	en
Polish Notation	0.00	122	3386	751	22%	5.6Hard	en
Preludes	0.00	115	3381	1669	49%	2.0Easy	en
Primal Representation	0.02	120	3189	1018	32%	2.9Medium	en
Prime Reduction	0.03	160	7114	2216	31%	2.4Easy	en
Prime Spiral	0.00	666	1064	450	42%	3.5Medium	en
Quick Estimates	0.00	5	16575	8878	54%	1.9Easy	en
Quite a Problem	0.00	5	6500	2674	41%	2.0Easy	en
Race Day	0.00	579	805	304	38%	3.7Medium	en
Random Walking in a Winter Wonderland	--	--	0	0	--	5.6Hard	en
Reachable Roads	0.00	266	7477	3790	51%	1.8Easy	en
RectSect	0.01	325	14	11	79%	3.0Medium	en
Reversing Roads	0.00	904	4567	1190	26%	3.3Medium	en
Robot Protection	0.01	286	2478	1131	46%	2.5Easy	en
Saving Daylight	0.00	76	3894	1998	51%	2.2Easy	en
Secure Doors	0.00	81	9596	4549	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2458	1330	54%	3.0Medium	en
Selling Spatulas	0.00	458	4647	609	13%	6.6Hard	en
Sierpiński Circumference	0.00	60	3405	1230	36%	3.0Medium	en
Sneak Attack	0.00	970	673	69	10%	8.3Hard	en
Sort Two Numbers	0.00	5	33612	16238	48%	1.2Easy	en
Sort of Sorting	0.00	5	28430	12244	43%	1.7Easy	en
Statistics	0.00	69	18501	7870	43%	1.6Easy	en
Stirling's Approximation	0.00	86	1349	544	40%	4.3Medium	en
Structural Differences	0.01	555	121	24	20%	6.9Hard	en
Substring Switcheroo	0.26	576	894	274	31%	5.5Hard	en
Sudokunique	0.01	1424	2307	350	15%	8.2Hard	en
Support Vector Machine	0.02	5	1291	387	30%	3.5Medium	en
Surveillance Squared	0.01	277	365	78	21%	6.4Hard	en
Synchronizing Lists	0.00	108	9369	5503	59%	1.7Easy	en
Texture Analysis	0.00	70	5362	1961	37%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1897	880	46%	2.5Easy	en
Transportation Planning	0.03	1157	822	265	32%	4.2Medium	en

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