Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	5466	1609	29%	0.00	1577	1246	79%	3.8
Alphabet Animals	2046	638	31%	0.00	631	510	81%	3.3
Black Friday	7401	2796	38%	0.00	2802	2445	87%	2.2
Car Game	2364	650	27%	0.10	432	272	63%	6.1
Card Hand Sorting	645	257	40%	0.00	207	171	83%	4.2
Coast Length	6317	2280	36%	0.01	1651	1393	84%	3.8
Erase Securely	4833	2549	53%	0.00	2375	2221	94%	1.7
Falling Mugs	2875	763	27%	0.00	695	605	87%	3.2
Flag Quiz	567	205	36%	0.00	207	175	85%	3.7
Galactic Warlords	503	116	23%	0.00	140	101	72%	6.6
Kayaking Trip	946	329	35%	0.01	261	217	83%	5.1
Kindergarten Excursion	1859	619	33%	0.00	521	424	81%	4.2
Lifting Walls	3254	783	24%	0.00	640	540	84%	4.0
Luggage	306	51	17%	0.06	45	34	76%	7.6
Number Trick	1588	267	17%	0.00	312	181	58%	7.2
Proteins	185	57	31%	0.01	57	46	81%	5.9
Restaurant Orders	6730	1421	21%	0.01	972	743	76%	4.3
Tomography	1503	391	26%	0.00	295	242	82%	3.7
Tomosynthesis	94	31	33%	0.00	25	22	88%	4.9
Vacuum Tubes	272	76	28%	0.01	74	56	76%	6.6
Virus Replication	4754	1060	22%	0.00	943	768	81%	3.6
X-ray spectrum	180	43	24%	0.00	43	38	88%	4.5