Problems by Greg Hamerly – Kattis, Kattis

	Add	Remove

Name	Fastest	Shortest	Total	Acc.	Ratio	Difficulty	Languages
Add Two Numbers	0.00	5	41966	22409	53%	1.2Easy	en
Adding Words	0.00	187	26943	6278	23%	3.5Medium	en
All Different Directions	0.00	197	3429	1325	39%	2.7Easy	en
BASIC Interpreter	0.00	422	4307	805	19%	5.2Medium	en
Bag of Tiles	0.02	254	3422	1302	38%	4.7Medium	en
Birthday Paradox	0.00	249	444	135	30%	5.3Medium	en
Bounding Robots	0.00	244	4185	2246	54%	2.1Easy	en
Cellular Merging	0.01	1602	322	30	9%	8.7Hard	en
Charting Progress	0.00	85	4482	1904	42%	2.2Easy	en
Chatter	0.10	611	833	363	44%	4.0Medium	en
Checking For Correctness	0.00	54	3161	919	29%	3.9Medium	en
Connect the Dots	0.00	576	2393	777	32%	3.5Medium	en
Convex Polygon Area	0.00	108	3149	1718	55%	2.0Easy	en
Counting Stars	0.00	255	18236	5181	28%	2.6Easy	en
DNA Similarity	0.01	386	34	20	59%	3.4Medium	en
Dart Scoring	0.00	636	1250	516	41%	3.6Medium	en
Das Blinkenlights	0.00	5	8149	3483	43%	1.6Easy	en
Deduplicating Files	0.01	245	5428	1541	28%	4.4Medium	en
Detailed Differences	0.00	5	24622	12211	50%	1.4Easy	en
Dicey Frequencies	0.01	340	35	13	37%	4.4Medium	en
Different Distances	0.00	78	7153	3356	47%	2.2Easy	en
Echo Echo Echo	0.00	5	39392	21376	54%	1.2Easy	en
Engineering English	0.00	5	7810	3396	43%	2.5Easy	en
Enlarging Hash Tables	0.00	136	5209	1684	32%	2.6Easy	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	8602	4804	56%	1.5Easy	en
Five, Six, Pick Up Sticks; Seven, Eight, Lay Them Straight	0.00	489	36	18	50%	3.5Medium	en
Forest Fires	0.17	773	429	164	38%	3.9Medium	en
Fouled files	0.00	5	67	43	64%	2.2Easy	en
Functional Fun	0.00	367	2171	960	44%	2.1Easy	en
Fundamental Neighbors	0.00	116	2316	882	38%	2.9Medium	en
Generalized Recursive Functions	0.02	280	1473	536	36%	4.3Medium	en
Genetic Search	0.00	213	2586	1116	43%	2.8Medium	en
Gerrymandering	0.00	5	3534	2194	62%	1.6Easy	en
Golomb Rulers	0.01	275	1909	913	48%	2.7Easy	en
Hall O' Wee Mirrors	0.00	339	271	104	38%	4.7Medium	en
Heliocentric	0.00	89	5282	2409	46%	2.2Easy	en
Hitting the Targets	0.00	173	3760	2191	58%	1.6Easy	en
How Many Digits?	0.00	71	9386	2569	27%	3.3Medium	en
Hurricane Danger!	0.00	199	1842	578	31%	3.3Medium	en
Image Decoding	0.00	276	6756	1309	19%	3.0Medium	en
Island Hopping	0.01	257	6647	2702	41%	2.4Easy	en
Juggling Patterns	0.00	262	2142	550	26%	4.8Medium	en
Limited Correspondence	0.01	867	1975	309	16%	6.6Hard	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	4121	1296	31%	2.7Easy	en
Matrix Inverse	0.00	93	4857	1634	34%	2.9Medium	en
Maximizing (And Minimizing) Your Winnings	0.07	363	1086	446	41%	3.8Medium	en
Maximizing Your Pay	0.00	484	889	254	29%	5.1Medium	en
Maze Movement	0.02	962	2012	909	45%	3.1Medium	en
Metaprogramming	0.00	97	4350	1848	42%	2.0Easy	en
Missing Numbers	0.00	5	10959	5623	51%	1.8Easy	en
Multi-Touch Gesture Classification	0.00	2526	259	41	16%	6.7Hard	en
Music Your Way	0.00	151	2966	1471	50%	1.9Easy	en
Musical Notation	0.00	123	1837	884	48%	2.1Easy	en
Name That Permutation	0.00	111	1101	437	40%	4.1Medium	en
Notable Quotables	0.00	1300	203	30	15%	7.2Hard	en
Oddities	0.00	5	50521	26152	52%	1.5Easy	en
Out of Context	0.02	1267	196	33	17%	6.6Hard	en
Pachinko Probability	0.00	540	540	205	38%	5.1Medium	en
Pachyderm Peanut Packing	0.00	265	2304	1076	47%	2.9Medium	en
Page Layout	0.02	310	1825	507	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	5583	2085	37%	2.1Easy	en
Polish Notation	0.00	122	3391	753	22%	5.6Hard	en
Preludes	0.00	115	3402	1675	49%	2.0Easy	en
Primal Representation	0.02	119	3193	1021	32%	2.9Medium	en
Prime Reduction	0.03	160	7154	2227	31%	2.4Easy	en
Prime Spiral	0.00	666	1067	451	42%	3.5Medium	en
Quick Estimates	0.00	5	16585	8886	54%	1.9Easy	en
Quite a Problem	0.00	5	6599	2700	41%	2.1Easy	en
Race Day	0.00	579	806	305	38%	3.7Medium	en
Random Walking in a Winter Wonderland	0.14	1091	28	6	21%	5.2Medium	en
Reachable Roads	0.00	266	7488	3799	51%	1.8Easy	en
RectSect	0.00	175	33	20	61%	2.7Easy	en
Reversing Roads	0.00	904	4568	1191	26%	3.3Medium	en
Robot Protection	0.01	286	2480	1132	46%	2.5Easy	en
Saving Daylight	0.00	76	3958	2013	51%	2.2Easy	en
Secure Doors	0.00	81	9606	4552	47%	1.8Easy	en
Self-Similar Strings	0.02	147	2460	1331	54%	3.0Medium	en
Selling Spatulas	0.00	458	4652	610	13%	6.5Hard	en
Sierpiński Circumference	0.00	60	3405	1230	36%	3.0Medium	en
Sneak Attack	0.00	970	674	70	10%	8.1Hard	en
Sort Two Numbers	0.00	5	34179	16507	48%	1.2Easy	en
Sort of Sorting	0.00	5	28746	12368	43%	1.8Easy	en
Statistics	0.00	69	18561	7896	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	895	275	31%	5.4Medium	en
Sudokunique	0.01	1424	2317	354	15%	8.1Hard	en
Support Vector Machine	0.02	5	1291	387	30%	3.5Medium	en
Surveillance Squared	0.01	277	365	78	21%	6.5Hard	en
Synchronizing Lists	0.00	108	9450	5553	59%	1.7Easy	en
Texture Analysis	0.00	70	5373	1966	37%	3.8Medium	en
The Rectangles Are Surrounding Us!	0.00	123	1906	887	47%	2.5Easy	en
Transportation Planning	0.03	1157	826	266	32%	4.2Medium	en

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