Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319178030117%3.0Mediumen
Ocean Currents0.17642164746128%5.4Mediumen
Scrolling Sign0.00100143762343%3.1Mediumen
Unique Snowflakes0.02863907108128%4.4Mediumen
Zerg Rush!!!0.2425611231512%7.6Harden