Problems from 2014 ICPC North America Qualifier

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Color Walk0.00711663756%8.4Harden
Eight Queens0.001765038412182%3.0Mediumen
Flexible Spaces0.00715298493393%1.7Easyen
Flip Five0.001511460127587%3.9Mediumen
Human Cannonball Run0.003843843360894%1.6Easyen
Mixed Fractions0.00498847834394%1.5Easyen
Narrow Art Gallery0.003183940343287%2.6Easyen
Pesky Mosquitoes0.0045044035982%4.2Mediumen
Tractor0.0010647734171%5.5Harden
Units0.0048344836281%5.5Harden
Yikes - Bikes!0.007211276450%8.2Harden