Problems from 2014 ICPC North America Qualifier

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Color Walk0.00711643555%8.5Harden
Eight Queens0.001764983407682%3.0Mediumen
Flexible Spaces0.00715248488693%1.8Easyen
Flip Five0.001511441125787%4.2Mediumen
Human Cannonball Run0.003843827359394%1.6Easyen
Mixed Fractions0.00498782828094%1.5Easyen
Narrow Art Gallery0.003183890338787%2.7Easyen
Pesky Mosquitoes0.0045044035881%4.3Mediumen
Tractor0.0010647633871%5.8Harden
Units0.0048344736081%6.7Harden
Yikes - Bikes!0.007211276450%8.2Harden