Problems from Waterloo Programming Contest 2009-02-08

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Colliding Traffic0.01319219239918%3.7Mediumen
Ocean Currents0.17642186052728%5.1Mediumen
Scrolling Sign0.00100155667343%2.9Mediumen
Unique Snowflakes0.02864381122728%3.9Mediumen
Zerg Rush!!!0.242561191179%8.8Harden