Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	4623	1361	29%	0.00	1343	1066	79%	3.6
Alphabet Animals	955	343	36%	0.01	349	287	82%	2.5
Black Friday	6117	2385	39%	0.00	2370	2072	87%	2.1
Card Hand Sorting	621	250	40%	0.00	196	164	84%	4.0
Car Game	2227	616	28%	0.10	405	252	62%	5.9
Coast Length	5553	2019	36%	0.01	1425	1217	85%	3.1
Erase Securely	4163	2194	53%	0.00	2058	1920	93%	1.7
Falling Mugs	2490	641	26%	0.00	585	510	87%	3.2
Flag Quiz	432	152	35%	0.00	162	133	82%	4.0
Galactic Warlords	468	109	23%	0.00	134	98	73%	6.4
Kayaking Trip	840	293	35%	0.01	241	198	82%	5.2
Kindergarten Excursion	1433	516	36%	0.00	403	337	84%	4.2
Lifting Walls	2740	686	25%	0.00	550	468	85%	3.8
Luggage	292	48	16%	0.06	41	31	76%	7.9
Number Trick	1506	256	17%	0.00	304	176	58%	7.2
Proteins	171	54	32%	0.01	55	43	78%	6.1
Restaurant Orders	4525	867	19%	0.01	696	527	76%	4.9
Tomography	1227	319	26%	0.00	231	185	80%	3.9
Tomosynthesis	47	21	45%	0.00	21	18	86%	5.9
Vacuum Tubes	266	75	28%	0.01	71	55	77%	5.6
Virus Replication	3325	782	24%	0.00	739	591	80%	4.2
X-ray spectrum	166	38	23%	0.00	39	34	87%	4.6