Problems by Ulf Lundström

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
A1 Paper 3767 1118 30% 0.00 1100 862 78% 3.8
Black Friday 5635 2153 38% 0.00 2148 1868 87% 2.1
Card Hand Sorting 578 224 39% 0.00 183 155 85% 3.8
Car Game 2048 549 27% 0.10 380 234 62% 5.8
Coast Length 4950 1825 37% 0.02 1268 1077 85% 3.3
Erase Securely 3693 1950 53% 0.00 1830 1708 93% 1.7
Falling Mugs 2283 576 25% 0.00 529 458 87% 3.3
Flag Quiz 360 119 33% 0.00 134 107 80% 4.4
Galactic Warlords 452 104 23% 0.00 128 93 73% 6.5
Kayaking Trip 704 256 36% 0.01 212 171 81% 5.1
Kindergarten Excursion 1274 442 35% 0.00 364 302 83% 4.2
Lifting Walls 2492 632 25% 0.00 490 421 86% 3.5
Luggage 285 47 16% 0.06 39 30 77% 7.2
Number Trick 1302 231 18% 0.00 273 161 59% 6.9
Proteins 154 50 32% 0.01 49 39 80% 5.7
Restaurant Orders 4083 740 18% 0.01 615 467 76% 4.9
Tomography 1106 282 25% 0.00 193 151 78% 4.0
Tomosynthesis 46 20 43% 0.00 20 17 85% 5.9
Vacuum Tubes 258 72 28% 0.01 68 52 76% 5.5
Virus Replication 2977 711 24% 0.00 658 535 81% 3.9
X-ray spectrum 163 37 23% 0.00 38 33 87% 4.3