Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319201534217%3.5Mediumen
Ocean Currents0.17642172448428%5.2Mediumen
Scrolling Sign0.00100143263044%3.0Mediumen
Unique Snowflakes0.02864021112828%3.8Mediumen
Zerg Rush!!!0.2433951051413%8.2Harden