Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	4949	1463	30%	0.00	1446	1152	80%	3.6
Alphabet Animals	1707	543	32%	0.00	549	443	81%	3.3
Black Friday	6909	2638	38%	0.00	2649	2303	87%	2.2
Card Hand Sorting	630	253	40%	0.00	200	167	84%	4.1
Car Game	2277	635	28%	0.10	413	260	63%	5.9
Coast Length	5819	2126	37%	0.01	1515	1296	86%	3.0
Erase Securely	4498	2366	53%	0.00	2218	2067	93%	1.7
Falling Mugs	2581	672	26%	0.00	615	536	87%	3.2
Flag Quiz	464	168	36%	0.00	174	143	82%	4.0
Galactic Warlords	497	115	23%	0.00	138	100	72%	6.6
Kayaking Trip	862	298	35%	0.01	246	201	82%	5.3
Kindergarten Excursion	1593	553	35%	0.00	443	368	83%	4.4
Lifting Walls	2822	707	25%	0.00	568	481	85%	4.0
Luggage	296	50	17%	0.06	43	33	77%	7.3
Number Trick	1531	258	17%	0.00	307	178	58%	7.2
Proteins	172	55	32%	0.01	56	44	79%	6.0
Restaurant Orders	5436	1138	21%	0.01	813	618	76%	4.3
Tomography	1289	333	26%	0.00	240	195	81%	3.9
Tomosynthesis	52	22	42%	0.00	22	19	86%	5.7
Vacuum Tubes	271	76	28%	0.01	73	56	77%	6.2
Virus Replication	4351	970	22%	0.00	862	695	81%	3.7
X-ray spectrum	168	40	24%	0.00	40	35	88%	4.6