Problems from 2014 ICPC North America Qualifier

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Color Walk0.00711603457%8.6Harden
Eight Queens0.001764960405882%3.0Mediumen
Flexible Spaces0.00715180482393%1.8Easyen
Flip Five0.001511413123187%4.5Mediumen
Human Cannonball Run0.003843663343994%1.7Easyen
Mixed Fractions0.00498737823894%1.5Easyen
Narrow Art Gallery0.003183831332887%2.7Easyen
Pesky Mosquitoes0.0045043835681%4.3Mediumen
Tractor0.0010647033571%5.8Harden
Units0.0048344535981%6.7Harden
Yikes - Bikes!0.007211266451%8.2Harden