Problems from 2014 ICPC North America Qualifier

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Color Walk 143 42 29% 0.01 42 27 64% 8.4
Eight Queens 14858 4137 28% 0.00 3957 3223 81% 3.3
Flexible Spaces 8332 4605 55% 0.00 3704 3444 93% 1.8
Flip Five 2342 1189 51% 0.00 951 828 87% 3.0
Human Cannonball Run 3604 1764 49% 0.00 1357 1250 92% 2.1
Mixed Fractions 14472 7329 51% 0.00 6822 6441 94% 1.7
Narrow Art Gallery 8973 2841 32% 0.00 2224 1922 86% 3.0
Pesky Mosquitoes 1336 342 26% 0.00 308 244 79% 5.2
Tractor 1061 313 30% 0.00 357 251 70% 5.8
Units 1021 379 37% 0.00 322 271 84% 3.3
Yikes - Bikes! 371 66 18% 0.00 110 55 50% 8.3