Problems by Per Austrin – Kattis, Kattis

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
#exclude<scoring>	0.02	785	680	34	5%	9.1Hard	en
A Different List Game	0.00	353	1248	260	21%	8.9Hard	en
A List Game	0.00	18	5066	4251	84%	2.8Medium	en
A Real Challenge	0.00	6	10223	9270	91%	1.7Easy	en
AI Jeopardy	0.02	145	177	107	60%	6.5Hard	en
Ace Arbiter	0.00	200	512	372	73%	5.6Hard	en
All Just A Dream	0.02	248	756	577	76%	5.4Medium	en
All Pairs Shortest Path	0.00	427	2845	2070	73%	3.9Medium	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	472	407	86%	3.7Medium	en
Best Compression Ever	0.00	29	1293	1173	91%	2.6Easy	en
Bilateral Projects	0.00	1487	120	94	78%	6.4Hard	en
Bling	0.09	2601	19	5	26%	8.6Hard	en
Calculator	0.00	27	1380	1131	82%	3.1Medium	en
Cars	0.00	826	81	48	59%	7.4Hard	en
Cat Coat Colors	0.00	1140	343	258	75%	6.0Hard	en
Cat vs. Dog	0.00	351	516	370	72%	5.0Medium	en
Catalan Numbers	0.00	62	1423	1184	83%	3.1Medium	en
Cheating Luck	0.00	615	123	84	68%	7.7Hard	en
Cheering Game	0.00	1080	88	69	78%	6.6Hard	en
Chinese Remainder	0.00	101	1262	1002	79%	3.4Medium	en
Chinese Remainder Theorem (non-relatively prime moduli)	0.00	161	1156	974	84%	3.2Medium	en
Chopping Wood	0.01	252	1031	917	89%	3.4Medium	en
Closest Pair	0.05	572	1228	649	53%	6.2Hard	en
Closest Pair (Uniform)	0.03	570	1054	735	70%	4.5Medium	en
Collapse	0.03	405	375	328	87%	3.2Medium	en
Color Codes	0.01	986	27	14	52%	8.2Hard	en
Convex Hull	0.01	596	3049	2249	74%	3.3Medium	en
DEX Save	0.00	451	78	66	85%	4.2Medium	en
Death and Taxes	0.00	235	649	581	90%	3.1Medium	en
Deceptive Directions	0.03	681	386	269	70%	6.1Hard	en
Disgruntled Judge	0.00	331	202	180	89%	3.6Medium	en
Dominant Strings	0.02	624	341	147	43%	8.5Hard	en
Dungeon Dawdler	0.05	4889	20	9	45%	8.3Hard	en
Dyson Circle	0.01	151	139	111	80%	6.3Hard	en
Easter Eggs	0.17	1366	41	18	44%	9.0Hard	en
Eulerian Path	0.01	617	718	571	80%	4.4Medium	en
Event Planning	0.00	107	1668	1511	91%	2.4Easy	en
Exam Redistribution	0.00	90	1153	1059	92%	2.5Easy	en
Exponial	0.00	352	314	234	75%	5.3Medium	en
Fenwick Tree	0.57	202	2517	2047	81%	3.6Medium	en
Fixing the Bugs	0.05	886	77	45	58%	6.9Hard	en
Fleecing the Raffle	0.00	76	523	452	86%	4.1Medium	en
Flight Plan Evaluation	0.00	1619	80	59	74%	7.9Hard	en
Flight Safety	0.12	2728	20	8	40%	8.4Hard	en
Gaggle	0.08	540	50	34	68%	8.0Hard	en
Get Shorty	0.01	328	3426	2859	83%	3.1Medium	en
Graduation Guarantee	0.04	207	341	294	86%	3.7Medium	en
Hot Hike	0.00	80	3182	2914	92%	1.9Easy	en
House of Cards	0.00	23	837	703	84%	3.5Medium	en
Imperial Measurement	0.00	147	1412	1296	92%	2.5Easy	en
Interception	0.46	3717	31	13	42%	8.2Hard	en
Interval Cover	0.03	343	1054	799	76%	5.2Medium	en
Just A Few More Triangles!	0.02	451	164	125	76%	6.2Hard	en
Kattis' Little Helpers	0.13	3568	25	11	44%	6.7Hard	en
Kitchen Combinatorics	0.00	403	340	285	84%	4.7Medium	en
Knapsack	0.01	282	3606	2726	76%	3.6Medium	en
Ladder	0.00	35	11457	10943	96%	1.5Easy	en
Line Segment Distance	0.00	404	713	607	85%	3.5Medium	en
Line Segment Intersection	0.00	689	734	536	73%	5.9Hard	en
Linear Equation Solver	0.01	892	489	377	77%	5.1Medium	en
Linear Recurrences	0.03	476	314	261	83%	4.8Medium	en
Lines Of Action	0.01	5234	12	2	17%	7.8Hard	en
Longest Increasing Subsequence	0.03	280	2108	1515	72%	3.9Medium	en
Maximum Flow	0.01	402	1942	1462	75%	4.1Medium	en
Maximum Number of Colinear Points	0.03	371	685	586	86%	3.1Medium	en
Meow Factor	0.00	38	1067	903	85%	3.5Medium	en
Meow Factor 2	0.02	192	171	117	68%	5.7Hard	en
Methodic Multiplication	0.00	43	1629	1563	96%	1.6Easy	en
Minimum Cost Maximum Flow	0.01	1377	623	512	82%	4.7Medium	en
Minimum Cut	0.01	730	885	758	86%	3.1Medium	en
Minimum Spanning Tree	0.03	356	2648	2176	82%	3.1Medium	en
Modular Arithmetic	0.00	188	1213	1049	86%	2.7Easy	en
Moving to Nuremberg	0.08	798	126	96	76%	4.8Medium	en
Odometer Analysis	0.00	1111	25	5	20%	9.1Hard	en
Organising the Organisation	0.01	970	43	32	74%	5.6Hard	en
Partial Linear Equation Solver	0.01	1070	282	175	62%	7.1Hard	en
Peer Streaming	0.04	1300	33	21	64%	6.6Hard	en
Pitch Performance	0.00	1205	47	37	79%	5.4Medium	en
Pizza Problems	0.06	933	60	33	55%	7.3Hard	en
Playlist	0.30	1251	103	49	48%	6.5Hard	en
Point in Polygon	0.00	378	979	764	78%	4.7Medium	en
Polygon Area	0.00	118	2458	2173	88%	2.0Easy	en
Polynomial Multiplication 1	0.00	120	1399	1316	94%	1.8Easy	en
Polynomial Multiplication 2	0.04	594	772	544	70%	5.1Medium	en
Power Signs	0.00	519	36	21	58%	7.2Hard	en
Primary Register	0.00	80	1212	1106	91%	2.4Easy	en
Prime Sieve	0.00	236	2678	1974	74%	4.3Medium	en
Proving Equivalences	0.02	740	1103	894	81%	3.9Medium	en
Rational Arithmetic	0.00	64	1588	1354	85%	3.1Medium	en
Riddle of the Sphinx	0.00	127	170	144	85%	3.3Medium	en
SMS Typing	0.19	1722	108	52	48%	8.5Hard	en
Shovelling Snow	0.01	1795	117	50	43%	8.2Hard	en
Shovelling Snow	0.01	1138	78	35	45%	8.6Hard	en
Single source shortest path, negative weights	0.00	396	2014	1576	78%	3.1Medium	en
Single source shortest path, non-negative weights	0.01	331	4725	3953	84%	2.5Easy	en
Single source shortest path, time table	0.01	378	1380	1203	87%	2.7Easy	en

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