Problems by Ulf Lundström

	Submissions				Users
Name	Total	Acc.	Ratio	Fastest	Total	Acc.	Ratio	Difficulty
A1 Paper	5785	1722	30%	0.00	1701	1349	79%	3.7
Alphabet Animals	2354	723	31%	0.00	706	572	81%	3.3
Black Friday	7848	2992	38%	0.00	2973	2609	88%	2.0
Car Game	2387	662	28%	0.10	439	279	64%	6.1
Card Hand Sorting	674	270	40%	0.00	220	184	84%	4.1
Coast Length	6778	2479	37%	0.01	1770	1505	85%	3.6
Erase Securely	5337	2767	52%	0.00	2579	2409	93%	1.7
Falling Mugs	3105	806	26%	0.00	747	646	86%	3.5
Flag Quiz	625	228	36%	0.00	229	195	85%	3.7
Galactic Warlords	509	120	24%	0.00	143	104	73%	6.6
Kayaking Trip	982	342	35%	0.01	274	227	83%	5.1
Kindergarten Excursion	2074	671	32%	0.00	572	471	82%	4.2
Lifting Walls	3489	836	24%	0.00	685	586	86%	3.9
Luggage	307	52	17%	0.06	46	35	76%	7.5
Number Trick	1642	283	17%	0.00	326	192	59%	7.0
Proteins	186	57	31%	0.01	58	46	79%	5.9
Restaurant Orders	6955	1472	21%	0.01	1013	781	77%	4.3
Tomography	1557	410	26%	0.00	313	258	82%	3.8
Tomosynthesis	93	31	33%	0.00	25	22	88%	5.0
Vacuum Tubes	273	77	28%	0.01	75	57	76%	6.5
Virus Replication	5082	1136	22%	0.00	1017	839	82%	3.5
X-ray spectrum	192	46	24%	0.00	47	41	87%	5.4