Problems by Per Austrin – Kattis, Kattis

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Name	Fastest	Shortest	Authors	Full Solves	Ratio	Difficulty	Languages
#exclude<scoring>	0.01	739	905	54	6%	9.1Hard	en
A Different List Game	0.00	353	1282	274	21%	8.8Hard	en
A List Game	0.00	18	5327	4476	84%	2.6Easy	en
A Real Challenge	0.00	6	10850	9844	91%	1.7Easy	en
AI Jeopardy	0.02	145	195	119	61%	6.6Hard	en
Ace Arbiter	0.00	200	526	383	73%	5.6Hard	en
All Just A Dream	0.02	248	820	633	77%	5.2Medium	en
All Pairs Shortest Path	0.00	389	3104	2309	74%	3.0Medium	en
Apparatus	0.01	288	243	177	73%	5.7Hard	en
Archaeological Recovery	0.00	2862	12	7	58%	6.5Hard	en
Assassins	0.01	232	284	166	58%	6.3Hard	en
Barking Up The Wrong Tree	0.00	2062	131	30	23%	9.2Hard	en
Best Before	0.00	304	495	428	86%	3.5Medium	en
Best Compression Ever	0.00	29	1311	1188	91%	2.5Easy	en
Bilateral Projects	0.00	1487	127	100	79%	5.9Hard	en
Bling	0.09	2601	19	6	32%	8.6Hard	en
Calculator	0.00	27	1421	1161	82%	3.2Medium	en
Cars	0.00	826	82	50	61%	7.0Hard	en
Cat Coat Colors	0.00	1140	360	266	74%	6.0Hard	en
Cat vs. Dog	0.00	351	567	416	73%	4.3Medium	en
Catalan Numbers	0.00	62	1481	1233	83%	3.0Medium	en
Cheating Luck	0.00	615	123	84	68%	7.7Hard	en
Cheering Game	0.00	1080	94	74	79%	7.1Hard	en
Chinese Remainder	0.00	101	1342	1077	80%	3.0Medium	en
Chinese Remainder Theorem (non-relatively prime moduli)	0.00	161	1233	1049	85%	2.9Medium	en
Chopping Wood	0.01	252	1076	960	89%	3.0Medium	en
Closest Pair	0.04	572	1292	698	54%	5.6Hard	en
Closest Pair (Uniform)	0.03	312	1207	873	72%	3.4Medium	en
Collapse	0.03	405	380	331	87%	3.2Medium	en
Color Codes	0.01	986	28	15	54%	8.1Hard	en
Convex Hull	0.01	596	3338	2515	75%	2.6Easy	en
DEX Save	0.00	451	82	71	87%	3.3Medium	en
Death and Taxes	0.00	235	721	646	90%	3.1Medium	en
Deceptive Directions	0.03	681	404	280	69%	6.1Hard	en
Disgruntled Judge	0.00	331	210	188	90%	3.3Medium	en
Dominant Strings	0.02	624	344	148	43%	8.4Hard	en
Dungeon Dawdler	0.05	4889	20	10	50%	7.4Hard	en
Dyson Circle	0.01	151	141	113	80%	6.2Hard	en
Easter Eggs	0.17	1366	48	24	50%	8.9Hard	en
Eulerian Path	0.01	617	747	598	80%	4.1Medium	en
Event Planning	0.00	107	1699	1543	91%	2.2Easy	en
Exam Redistribution	0.00	90	1184	1088	92%	2.4Easy	en
Exponial	0.00	352	334	249	75%	5.2Medium	en
Fenwick Tree	0.57	202	2718	2225	82%	3.3Medium	en
Fixing the Bugs	0.05	886	77	45	58%	6.9Hard	en
Fleecing the Raffle	0.00	76	616	538	87%	3.9Medium	en
Flight Plan Evaluation	0.00	1619	79	59	75%	7.7Hard	en
Flight Safety	0.01	2728	20	9	45%	8.0Hard	en
Gaggle	0.08	540	49	36	73%	6.2Hard	en
Get Shorty	0.01	328	3553	2974	84%	2.6Easy	en
Graduation Guarantee	0.04	207	371	321	87%	3.6Medium	en
Hot Hike	0.00	80	3246	2981	92%	1.8Easy	en
House of Cards	0.00	23	865	727	84%	3.4Medium	en
Imperial Measurement	0.00	147	1431	1313	92%	2.4Easy	en
Interception	0.40	3717	31	14	45%	7.8Hard	en
Interval Cover	0.02	343	1104	845	77%	4.6Medium	en
Just A Few More Triangles!	0.00	451	170	130	76%	6.0Hard	en
Kattis' Little Helpers	0.13	3467	26	12	46%	7.0Hard	en
Kitchen Combinatorics	0.00	403	349	294	84%	4.5Medium	en
Knapsack	0.01	233	4060	3123	77%	3.3Medium	en
Ladder	0.00	35	11947	11415	96%	1.4Easy	en
Line Segment Distance	0.00	404	833	715	86%	3.2Medium	en
Line Segment Intersection	0.00	689	783	576	74%	5.2Medium	en
Linear Equation Solver	0.01	892	512	399	78%	4.7Medium	en
Linear Recurrences	0.01	476	343	290	85%	4.4Medium	en
Lines Of Action	0.01	5234	11	3	27%	6.3Hard	en
Longest Increasing Subsequence	0.03	280	2306	1686	73%	3.5Medium	en
Maximum Flow	0.01	402	2098	1611	77%	3.2Medium	en
Maximum Number of Colinear Points	0.03	371	742	637	86%	2.9Medium	en
Meow Factor	0.00	38	1105	934	85%	3.4Medium	en
Meow Factor 2	0.02	172	174	118	68%	5.7Hard	en
Methodic Multiplication	0.00	43	1689	1622	96%	1.5Easy	en
Minimum Cost Maximum Flow	0.01	1377	665	553	83%	4.4Medium	en
Minimum Cut	0.01	730	969	841	87%	2.7Easy	en
Minimum Spanning Tree	0.02	356	2794	2315	83%	2.7Easy	en
Modular Arithmetic	0.00	188	1400	1223	87%	2.4Easy	en
Moving to Nuremberg	0.08	798	131	101	77%	4.5Medium	en
Odometer Analysis	0.00	1111	26	5	19%	9.4Hard	en
Organising the Organisation	0.01	970	45	35	78%	4.6Medium	en
Partial Linear Equation Solver	0.01	1070	299	188	63%	6.8Hard	en
Peer Streaming	0.04	1300	32	20	62%	7.0Hard	en
Pitch Performance	0.00	1205	48	39	81%	5.0Medium	en
Pizza Problems	0.04	933	60	35	58%	6.1Hard	en
Playlist	0.30	1251	110	56	51%	5.6Hard	en
Point in Polygon	0.00	378	1025	806	79%	4.2Medium	en
Polygon Area	0.00	118	2556	2265	89%	1.9Easy	en
Polynomial Multiplication 1	0.00	120	1416	1333	94%	1.7Easy	en
Polynomial Multiplication 2	0.03	594	797	566	71%	4.7Medium	en
Power Signs	0.00	519	37	20	54%	8.5Hard	en
Primary Register	0.00	80	1222	1117	91%	2.3Easy	en
Prime Sieve	0.00	236	2750	2035	74%	4.1Medium	en
Proving Equivalences	0.02	340	1171	960	82%	2.7Easy	en
Rational Arithmetic	0.00	64	1632	1393	85%	2.9Medium	en
Riddle of the Sphinx	0.00	127	198	165	83%	3.6Medium	en
SMS Typing	0.19	1722	107	52	49%	8.3Hard	en
Shovelling Snow	0.01	1923	119	53	45%	8.0Hard	en
Shovelling Snow	0.01	1138	82	38	46%	8.5Hard	en
Single source shortest path, negative weights	0.00	238	2304	1853	80%	2.3Easy	en
Single source shortest path, non-negative weights	0.01	251	4975	4186	84%	2.2Easy	en
Single source shortest path, time table	0.01	294	1434	1256	88%	2.4Easy	en

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