Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Colliding Traffic0.0131922317980%3.8Mediumen
Ocean Currents0.1764244536382%4.8Mediumen
Scrolling Sign0.0010067158888%3.0Mediumen
Unique Snowflakes0.0286107284779%4.1Mediumen
Zerg Rush!!!0.242561271452%8.8Harden