Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	6648	2012	30%	0.00	2001	1588	79%	3.8
Alphabet Animals	3587	1049	29%	0.00	973	794	82%	3.5
Black Friday	9090	3472	38%	0.00	3436	3013	88%	2.2
Card Hand Sorting	760	296	39%	0.00	241	201	83%	4.1
Car Game	2449	683	28%	0.10	465	298	64%	5.9
Coast Length	7646	2821	37%	0.01	2012	1714	85%	3.6
Erase Securely	6199	3211	52%	0.00	2970	2781	94%	1.7
Exhaustive Experiment	233	52	22%	0.04	59	41	69%	6.0
Falling Mugs	4183	1073	26%	0.00	943	795	84%	3.8
Flag Quiz	1025	359	35%	0.00	325	276	85%	3.9
Galactic Warlords	555	134	24%	0.00	158	117	74%	6.5
Kayaking Trip	1674	522	31%	0.01	439	354	81%	4.5
Kindergarten Excursion	2447	817	33%	0.00	665	558	84%	3.7
Lifting Walls	4277	1016	24%	0.00	832	703	84%	4.2
Luggage	328	56	17%	0.06	48	37	77%	7.2
Number Trick	1849	304	16%	0.00	362	211	58%	7.1
Proteins	200	58	29%	0.01	60	47	78%	6.4
Restaurant Orders	8439	1757	21%	0.01	1212	930	77%	5.2
Tomography	1754	454	26%	0.00	357	293	82%	3.9
Tomosynthesis	105	34	32%	0.00	28	25	89%	4.7
Vacuum Tubes	285	79	28%	0.01	77	58	75%	6.7
Virus Replication	6099	1478	24%	0.00	1237	1029	83%	3.6
X-ray spectrum	197	47	24%	0.00	50	42	84%	5.7