Problems by Per Austrin – Kattis, Kattis

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
#exclude<scoring>	0.01	739	845	47	6%	9.1Hard	en
A Different List Game	0.00	353	1276	271	21%	8.8Hard	en
A List Game	0.00	18	5210	4373	84%	2.8Medium	en
A Real Challenge	0.00	6	10726	9725	91%	1.8Easy	en
AI Jeopardy	0.02	145	191	117	61%	6.6Hard	en
Ace Arbiter	0.00	200	523	380	73%	5.6Hard	en
All Just A Dream	0.02	248	804	620	77%	5.1Medium	en
All Pairs Shortest Path	0.00	389	3064	2271	74%	3.1Medium	en
Apparatus	0.01	288	239	174	73%	5.8Hard	en
Archaeological Recovery	0.00	2862	11	6	55%	6.5Hard	en
Assassins	0.01	232	279	159	57%	6.5Hard	en
Barking Up The Wrong Tree	0.00	2062	125	28	22%	9.2Hard	en
Best Before	0.00	304	489	422	86%	3.6Medium	en
Best Compression Ever	0.00	29	1304	1182	91%	2.5Easy	en
Bilateral Projects	0.00	1487	125	98	78%	6.1Hard	en
Bling	0.09	2601	19	6	32%	8.4Hard	en
Calculator	0.00	27	1415	1155	82%	3.3Medium	en
Cars	0.00	826	81	49	60%	7.2Hard	en
Cat Coat Colors	0.00	1140	359	265	74%	6.0Hard	en
Cat vs. Dog	0.00	351	562	411	73%	4.4Medium	en
Catalan Numbers	0.00	62	1463	1218	83%	3.1Medium	en
Cheating Luck	0.00	615	122	83	68%	7.8Hard	en
Cheering Game	0.00	1080	93	73	78%	7.2Hard	en
Chinese Remainder	0.00	101	1317	1051	80%	3.2Medium	en
Chinese Remainder Theorem (non-relatively prime moduli)	0.00	161	1188	1005	85%	3.0Medium	en
Chopping Wood	0.01	252	1059	944	89%	3.0Medium	en
Closest Pair	0.05	572	1284	692	54%	5.6Hard	en
Closest Pair (Uniform)	0.03	312	1206	872	72%	3.4Medium	en
Collapse	0.03	405	379	330	87%	3.2Medium	en
Color Codes	0.01	986	28	15	54%	8.1Hard	en
Convex Hull	0.01	596	3305	2483	75%	2.7Easy	en
DEX Save	0.00	451	81	70	86%	3.6Medium	en
Death and Taxes	0.00	235	709	634	89%	3.1Medium	en
Deceptive Directions	0.03	681	402	278	69%	6.1Hard	en
Disgruntled Judge	0.00	331	207	185	89%	3.4Medium	en
Dominant Strings	0.02	624	342	147	43%	8.5Hard	en
Dungeon Dawdler	0.05	4889	20	10	50%	7.5Hard	en
Dyson Circle	0.01	151	141	113	80%	6.3Hard	en
Easter Eggs	0.17	1366	42	21	50%	8.6Hard	en
Eulerian Path	0.01	617	725	577	80%	4.3Medium	en
Event Planning	0.00	107	1695	1539	91%	2.3Easy	en
Exam Redistribution	0.00	90	1180	1084	92%	2.4Easy	en
Exponial	0.00	352	331	245	74%	5.3Medium	en
Fenwick Tree	0.57	202	2648	2160	82%	3.5Medium	en
Fixing the Bugs	0.05	886	77	45	58%	7.0Hard	en
Fleecing the Raffle	0.00	76	595	520	87%	4.0Medium	en
Flight Plan Evaluation	0.00	1619	79	59	75%	7.7Hard	en
Flight Safety	0.12	2728	19	8	42%	8.1Hard	en
Gaggle	0.08	540	49	36	73%	7.1Hard	en
Get Shorty	0.01	328	3522	2947	84%	2.6Easy	en
Graduation Guarantee	0.04	207	366	317	87%	3.7Medium	en
Hot Hike	0.00	80	3233	2966	92%	1.8Easy	en
House of Cards	0.00	23	863	725	84%	3.4Medium	en
Imperial Measurement	0.00	147	1429	1311	92%	2.4Easy	en
Interception	0.40	3717	31	14	45%	7.7Hard	en
Interval Cover	0.02	343	1084	827	76%	4.7Medium	en
Just A Few More Triangles!	0.02	451	168	129	77%	6.0Hard	en
Kattis' Little Helpers	0.13	3568	24	10	42%	7.2Hard	en
Kitchen Combinatorics	0.00	403	346	290	84%	4.6Medium	en
Knapsack	0.01	233	3965	3036	77%	3.4Medium	en
Ladder	0.00	35	11701	11173	95%	1.5Easy	en
Line Segment Distance	0.00	404	814	696	86%	3.3Medium	en
Line Segment Intersection	0.00	689	768	561	73%	5.5Hard	en
Linear Equation Solver	0.01	892	507	394	78%	4.8Medium	en
Linear Recurrences	0.01	476	339	286	84%	4.6Medium	en
Lines Of Action	0.01	5234	11	3	27%	7.3Hard	en
Longest Increasing Subsequence	0.03	280	2273	1653	73%	3.7Medium	en
Maximum Flow	0.01	402	2059	1572	76%	3.4Medium	en
Maximum Number of Colinear Points	0.03	371	718	617	86%	2.9Medium	en
Meow Factor	0.00	38	1092	922	84%	3.5Medium	en
Meow Factor 2	0.02	172	174	118	68%	5.8Hard	en
Methodic Multiplication	0.00	43	1676	1608	96%	1.5Easy	en
Minimum Cost Maximum Flow	0.01	1377	647	535	83%	4.5Medium	en
Minimum Cut	0.01	730	942	814	86%	2.8Medium	en
Minimum Spanning Tree	0.02	356	2730	2251	82%	2.9Medium	en
Modular Arithmetic	0.00	188	1371	1198	87%	2.4Easy	en
Moving to Nuremberg	0.08	798	128	98	77%	4.9Medium	en
Odometer Analysis	0.00	1111	25	5	20%	9.3Hard	en
Organising the Organisation	0.01	970	44	33	75%	5.8Hard	en
Partial Linear Equation Solver	0.01	1070	297	187	63%	7.0Hard	en
Peer Streaming	0.04	1300	32	20	62%	7.0Hard	en
Pitch Performance	0.00	1205	47	37	79%	5.6Hard	en
Pizza Problems	0.04	933	60	34	57%	6.9Hard	en
Playlist	0.30	1251	108	55	51%	5.3Medium	en
Point in Polygon	0.00	378	1012	792	78%	4.4Medium	en
Polygon Area	0.00	118	2533	2242	89%	2.0Easy	en
Polynomial Multiplication 1	0.00	120	1414	1330	94%	1.7Easy	en
Polynomial Multiplication 2	0.03	594	793	561	71%	4.9Medium	en
Power Signs	0.00	519	35	20	57%	7.8Hard	en
Primary Register	0.00	80	1221	1115	91%	2.3Easy	en
Prime Sieve	0.00	236	2704	1995	74%	4.3Medium	en
Proving Equivalences	0.02	340	1157	946	82%	2.9Medium	en
Rational Arithmetic	0.00	64	1610	1372	85%	3.0Medium	en
Riddle of the Sphinx	0.00	127	194	163	84%	3.5Medium	en
SMS Typing	0.19	1722	107	52	49%	8.4Hard	en
Shovelling Snow	0.01	1923	118	52	44%	8.0Hard	en
Shovelling Snow	0.01	1138	78	34	44%	8.9Hard	en
Single source shortest path, negative weights	0.00	238	2261	1808	80%	2.5Easy	en
Single source shortest path, non-negative weights	0.01	251	4908	4126	84%	2.2Easy	en
Single source shortest path, time table	0.01	294	1410	1231	87%	2.5Easy	en

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