Problems from Google Code Jam Practice Problems

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Numbers0.001255368265149%2.6Easyen
Shopping Plan0.0015141143127%8.0Harden
Square Fields (Easy)0.0081229813044%5.7Harden
Square Fields (Hard)0.0082454517833%7.3Harden