Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 4048 1211 30% 0.00 1181 935 79% 3.6
Black Friday 5769 2217 38% 0.00 2211 1925 87% 2.2
Card Hand Sorting 583 226 39% 0.00 187 156 83% 4.0
Car Game 2120 561 26% 0.10 392 243 62% 5.8
Coast Length 5252 1899 36% 0.01 1338 1137 85% 3.3
Erase Securely 3803 2020 53% 0.00 1893 1768 93% 1.7
Falling Mugs 2351 597 25% 0.00 550 475 86% 3.4
Flag Quiz 369 123 33% 0.00 138 111 80% 4.4
Galactic Warlords 460 107 23% 0.00 131 96 73% 6.4
Kayaking Trip 793 279 35% 0.01 224 185 83% 4.9
Kindergarten Excursion 1370 481 35% 0.00 379 315 83% 4.3
Lifting Walls 2555 648 25% 0.00 507 434 86% 3.6
Luggage 285 47 16% 0.06 39 30 77% 7.2
Number Trick 1336 239 18% 0.00 281 168 60% 6.9
Proteins 155 51 33% 0.01 50 40 80% 5.8
Restaurant Orders 4298 792 18% 0.01 644 485 75% 4.9
Tomography 1128 291 26% 0.00 203 159 78% 4.0
Tomosynthesis 46 20 43% 0.00 20 17 85% 5.9
Vacuum Tubes 265 74 28% 0.01 70 54 77% 5.6
Virus Replication 3087 730 24% 0.00 683 550 81% 4.1
X-ray spectrum 163 37 23% 0.00 38 33 87% 4.5