Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	5180	1502	29%	0.00	1504	1188	79%	3.9
Alphabet Animals	1888	587	31%	0.00	583	466	80%	3.4
Black Friday	7194	2713	38%	0.00	2721	2370	87%	2.2
Card Hand Sorting	635	255	40%	0.00	205	169	82%	4.2
Car Game	2336	644	28%	0.10	424	266	63%	6.0
Coast Length	5954	2183	37%	0.01	1552	1326	85%	3.1
Erase Securely	4662	2452	53%	0.00	2290	2138	93%	1.7
Falling Mugs	2770	731	26%	0.00	662	578	87%	3.2
Flag Quiz	533	188	35%	0.00	192	161	84%	3.7
Galactic Warlords	497	115	23%	0.00	138	100	72%	6.5
Kayaking Trip	924	322	35%	0.01	256	212	83%	5.1
Kindergarten Excursion	1647	565	34%	0.00	455	376	83%	4.3
Lifting Walls	2957	733	25%	0.00	592	500	84%	4.0
Luggage	296	50	17%	0.06	43	33	77%	7.5
Number Trick	1532	258	17%	0.00	308	178	58%	7.2
Proteins	185	57	31%	0.01	57	46	81%	5.8
Restaurant Orders	6223	1303	21%	0.01	913	696	76%	4.2
Tomography	1448	375	26%	0.00	277	226	82%	3.8
Tomosynthesis	94	31	33%	0.00	25	22	88%	5.1
Vacuum Tubes	271	76	28%	0.01	73	56	77%	6.2
Virus Replication	4609	1029	22%	0.00	917	746	81%	3.6
X-ray spectrum	172	41	24%	0.00	41	36	88%	4.5