Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	6232	1875	30%	0.00	1847	1476	80%	3.5
Alphabet Animals	3190	941	29%	0.00	879	721	82%	3.2
Black Friday	8519	3243	38%	0.00	3222	2830	88%	2.0
Card Hand Sorting	745	286	38%	0.00	235	196	83%	4.1
Car Game	2409	675	28%	0.10	452	290	64%	5.9
Coast Length	7147	2634	37%	0.01	1867	1589	85%	3.5
Erase Securely	5743	2986	52%	0.00	2769	2590	94%	1.7
Exhaustive Experiment	85	18	21%	0.08	28	16	57%	7.7
Falling Mugs	3626	945	26%	0.00	813	697	86%	3.6
Flag Quiz	931	319	34%	0.00	292	247	85%	3.9
Galactic Warlords	515	122	24%	0.00	145	106	73%	6.6
Kayaking Trip	1304	404	31%	0.01	339	268	79%	5.2
Kindergarten Excursion	2104	686	33%	0.00	590	485	82%	4.1
Lifting Walls	3901	918	24%	0.00	740	628	85%	4.0
Luggage	328	56	17%	0.06	48	37	77%	7.1
Number Trick	1721	294	17%	0.00	344	201	58%	7.1
Proteins	200	58	29%	0.01	60	47	78%	6.4
Restaurant Orders	7847	1592	20%	0.01	1104	842	76%	5.0
Tomography	1632	431	26%	0.00	337	275	82%	4.0
Tomosynthesis	94	32	34%	0.00	26	23	88%	4.9
Vacuum Tubes	279	79	28%	0.01	76	58	76%	6.5
Virus Replication	5562	1283	23%	0.00	1112	919	83%	3.6
X-ray spectrum	194	46	24%	0.00	49	41	84%	5.8