Problems from Google Code Jam Practice Problems

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Numbers0.001256210308250%1.9Easyen
Shopping Plan0.0011201603924%7.6Harden
Square Fields (Easy)0.0077236914539%5.3Mediumen
Square Fields (Hard)0.0082471020829%6.8Harden