Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	6912	2086	30%	0.00	2073	1652	80%	3.7
Alphabet Animals	8405	1549	18%	0.00	1367	979	72%	6.4
Black Friday	9283	3565	38%	0.00	3530	3097	88%	2.2
Card Hand Sorting	763	299	39%	0.00	244	204	84%	4.1
Car Game	2461	686	28%	0.10	469	301	64%	6.0
Coast Length	7744	2869	37%	0.01	2055	1753	85%	3.7
Erase Securely	6570	3401	52%	0.00	3123	2926	94%	1.7
Exhaustive Experiment	263	58	22%	0.04	64	46	72%	6.3
Falling Mugs	4323	1113	26%	0.00	981	827	84%	3.9
Flag Quiz	1086	374	34%	0.00	347	291	84%	4.1
Galactic Warlords	614	143	23%	0.00	171	124	73%	6.4
Kayaking Trip	1718	534	31%	0.01	453	364	80%	4.6
Kindergarten Excursion	2634	875	33%	0.00	709	594	84%	3.9
Lifting Walls	4449	1060	24%	0.00	877	740	84%	4.3
Luggage	339	60	18%	0.06	53	41	77%	6.4
Number Trick	1893	306	16%	0.00	365	212	58%	7.2
Proteins	221	65	29%	0.01	66	53	80%	5.7
Restaurant Orders	8843	1831	21%	0.01	1285	984	77%	5.4
Tomography	1827	476	26%	0.00	371	306	82%	3.9
Tomosynthesis	106	35	33%	0.00	29	26	90%	4.8
Vacuum Tubes	290	84	29%	0.00	82	63	77%	6.2
Virus Replication	6175	1503	24%	0.00	1262	1048	83%	3.8
X-ray spectrum	198	48	24%	0.00	51	43	84%	5.7