Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	4881	1435	29%	0.00	1420	1131	80%	3.5
Alphabet Animals	1579	491	31%	0.00	503	401	80%	3.2
Black Friday	6838	2607	38%	0.00	2611	2272	87%	2.2
Card Hand Sorting	630	253	40%	0.00	200	167	84%	4.1
Car Game	2252	621	28%	0.10	410	257	63%	5.9
Coast Length	5717	2092	37%	0.01	1483	1267	85%	3.0
Erase Securely	4394	2307	53%	0.00	2157	2012	93%	1.7
Falling Mugs	2563	660	26%	0.00	604	526	87%	3.2
Flag Quiz	435	154	35%	0.00	164	135	82%	4.1
Galactic Warlords	483	113	23%	0.00	136	98	72%	6.6
Kayaking Trip	854	296	35%	0.01	243	199	82%	5.3
Kindergarten Excursion	1492	521	35%	0.00	416	342	82%	4.4
Lifting Walls	2783	697	25%	0.00	561	473	84%	4.0
Luggage	294	49	17%	0.06	42	32	76%	7.8
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	5420	1128	21%	0.01	808	615	76%	4.3
Tomography	1244	325	26%	0.00	235	189	80%	3.9
Tomosynthesis	52	22	42%	0.00	22	19	86%	5.7
Vacuum Tubes	270	75	28%	0.01	72	55	76%	6.2
Virus Replication	4283	952	22%	0.00	844	683	81%	3.6
X-ray spectrum	166	38	23%	0.00	39	34	87%	4.6