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