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