Problems by Per Austrin – Kattis, Kattis

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
#exclude<scoring>	0.01	739	725	38	5%	9.1Hard	en
A Different List Game	0.00	353	1253	264	21%	8.9Hard	en
A List Game	0.00	18	5102	4277	84%	2.9Medium	en
A Real Challenge	0.00	6	10445	9473	91%	1.7Easy	en
AI Jeopardy	0.02	145	181	110	61%	6.6Hard	en
Ace Arbiter	0.00	200	520	378	73%	5.6Hard	en
All Just A Dream	0.02	248	758	579	76%	5.4Medium	en
All Pairs Shortest Path	0.00	427	2885	2102	73%	3.7Medium	en
Apparatus	0.01	288	237	171	72%	5.9Hard	en
Archaeological Recovery	0.02	2862	9	4	44%	6.5Hard	en
Assassins	0.01	232	270	152	56%	6.5Hard	en
Barking Up The Wrong Tree	0.00	2062	123	28	23%	9.2Hard	en
Best Before	0.00	304	475	409	86%	3.7Medium	en
Best Compression Ever	0.00	29	1294	1173	91%	2.6Easy	en
Bilateral Projects	0.00	1487	120	94	78%	6.4Hard	en
Bling	0.09	2601	18	5	28%	8.2Hard	en
Calculator	0.00	27	1395	1142	82%	3.1Medium	en
Cars	0.00	826	81	48	59%	7.6Hard	en
Cat Coat Colors	0.00	1140	346	258	75%	6.0Hard	en
Cat vs. Dog	0.00	351	528	381	72%	4.9Medium	en
Catalan Numbers	0.00	62	1439	1197	83%	3.1Medium	en
Cheating Luck	0.00	615	122	83	68%	7.8Hard	en
Cheering Game	0.00	1080	87	68	78%	6.7Hard	en
Chinese Remainder	0.00	101	1280	1021	80%	3.2Medium	en
Chinese Remainder Theorem (non-relatively prime moduli)	0.00	161	1162	979	84%	3.2Medium	en
Chopping Wood	0.01	252	1034	918	89%	3.4Medium	en
Closest Pair	0.05	572	1249	665	53%	6.0Hard	en
Closest Pair (Uniform)	0.03	312	1147	821	72%	3.5Medium	en
Collapse	0.03	405	376	328	87%	3.2Medium	en
Color Codes	0.01	986	28	15	54%	7.9Hard	en
Convex Hull	0.01	596	3082	2279	74%	3.3Medium	en
DEX Save	0.00	451	81	69	85%	4.0Medium	en
Death and Taxes	0.00	235	655	586	89%	3.1Medium	en
Deceptive Directions	0.03	681	402	278	69%	6.2Hard	en
Disgruntled Judge	0.00	331	201	179	89%	3.5Medium	en
Dominant Strings	0.02	624	340	146	43%	8.5Hard	en
Dungeon Dawdler	0.05	4889	19	9	47%	7.9Hard	en
Dyson Circle	0.01	151	139	111	80%	6.4Hard	en
Easter Eggs	0.17	1366	40	19	48%	8.8Hard	en
Eulerian Path	0.01	617	724	576	80%	4.4Medium	en
Event Planning	0.00	107	1673	1516	91%	2.3Easy	en
Exam Redistribution	0.00	90	1167	1073	92%	2.4Easy	en
Exponial	0.00	352	325	240	74%	5.4Medium	en
Fenwick Tree	0.57	202	2564	2087	81%	3.5Medium	en
Fixing the Bugs	0.05	886	77	45	58%	6.9Hard	en
Fleecing the Raffle	0.00	76	569	493	87%	4.0Medium	en
Flight Plan Evaluation	0.00	1619	79	59	75%	7.5Hard	en
Flight Safety	0.12	2728	19	8	42%	8.0Hard	en
Gaggle	0.08	540	49	35	71%	6.9Hard	en
Get Shorty	0.01	328	3469	2896	83%	3.0Medium	en
Graduation Guarantee	0.04	207	352	301	86%	3.8Medium	en
Hot Hike	0.00	80	3199	2932	92%	1.9Easy	en
House of Cards	0.00	23	842	707	84%	3.5Medium	en
Imperial Measurement	0.00	147	1414	1297	92%	2.6Easy	en
Interception	0.46	3717	30	13	43%	7.7Hard	en
Interval Cover	0.03	343	1057	803	76%	5.0Medium	en
Just A Few More Triangles!	0.02	451	165	126	76%	6.1Hard	en
Kattis' Little Helpers	0.13	3568	24	10	42%	7.1Hard	en
Kitchen Combinatorics	0.00	403	341	286	84%	4.7Medium	en
Knapsack	0.01	282	3684	2787	76%	3.6Medium	en
Ladder	0.00	35	11604	11079	95%	1.5Easy	en
Line Segment Distance	0.00	404	743	632	85%	3.5Medium	en
Line Segment Intersection	0.00	689	744	541	73%	5.9Hard	en
Linear Equation Solver	0.01	892	491	379	77%	5.1Medium	en
Linear Recurrences	0.03	476	314	261	83%	4.7Medium	en
Lines Of Action	0.01	5234	11	2	18%	7.1Hard	en
Longest Increasing Subsequence	0.03	280	2231	1623	73%	3.2Medium	en
Maximum Flow	0.01	402	1969	1488	76%	3.9Medium	en
Maximum Number of Colinear Points	0.03	371	696	595	85%	3.1Medium	en
Meow Factor	0.00	38	1072	905	84%	3.5Medium	en
Meow Factor 2	0.02	192	170	116	68%	5.7Hard	en
Methodic Multiplication	0.00	43	1659	1590	96%	1.6Easy	en
Minimum Cost Maximum Flow	0.01	1377	630	518	82%	4.6Medium	en
Minimum Cut	0.01	730	907	777	86%	3.1Medium	en
Minimum Spanning Tree	0.03	356	2671	2197	82%	3.0Medium	en
Modular Arithmetic	0.00	188	1245	1080	87%	2.7Easy	en
Moving to Nuremberg	0.08	798	124	94	76%	4.9Medium	en
Odometer Analysis	0.00	1111	24	5	21%	9.0Hard	en
Organising the Organisation	0.01	970	44	33	75%	5.6Hard	en
Partial Linear Equation Solver	0.01	1070	283	176	62%	7.1Hard	en
Peer Streaming	0.04	1300	32	20	62%	6.9Hard	en
Pitch Performance	0.00	1205	47	37	79%	5.5Hard	en
Pizza Problems	0.06	933	59	33	56%	6.8Hard	en
Playlist	0.30	1251	104	51	49%	6.1Hard	en
Point in Polygon	0.00	378	986	771	78%	4.6Medium	en
Polygon Area	0.00	118	2477	2190	88%	2.0Easy	en
Polynomial Multiplication 1	0.00	120	1403	1319	94%	1.8Easy	en
Polynomial Multiplication 2	0.04	594	774	545	70%	5.1Medium	en
Power Signs	0.00	519	35	20	57%	7.6Hard	en
Primary Register	0.00	80	1212	1106	91%	2.4Easy	en
Prime Sieve	0.00	236	2688	1983	74%	4.2Medium	en
Proving Equivalences	0.02	740	1124	915	81%	2.7Easy	en
Rational Arithmetic	0.00	64	1596	1360	85%	3.0Medium	en
Riddle of the Sphinx	0.00	127	173	147	85%	3.2Medium	en
SMS Typing	0.19	1722	107	52	49%	8.4Hard	en
Shovelling Snow	0.01	1923	116	49	42%	8.4Hard	en
Shovelling Snow	0.01	1138	76	34	45%	8.5Hard	en
Single source shortest path, negative weights	0.00	396	2088	1639	78%	3.0Medium	en
Single source shortest path, non-negative weights	0.01	331	4770	3991	84%	2.6Easy	en
Single source shortest path, time table	0.01	378	1382	1204	87%	2.7Easy	en

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