Problems from 2012 University of Chicago Invitational Programming Contest

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
CosmoCraft0.01842362158%8.0Harden
Covered Walkway0.0546267652077%4.1Mediumen
Double Dealing0.124401188673%5.7Harden
Estimation0.1682815212079%5.4Mediumen
Juggler0.0168419716483%4.8Mediumen
Red/Blue Spanning Tree0.0051851641380%4.1Mediumen
Science!0.0111921026160%7.9Harden
The End of the World0.007414211178%4.5Mediumen
The Red Gem0.012222734258%9.0Harden
The Worm in the Apple0.121993504182%4.3Mediumen