Problems from Google Code Jam Practice Problems

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Numbers0.001255608274949%2.5Easyen
Shopping Plan0.0015141153127%8.0Harden
Square Fields (Easy)0.0081230413444%5.6Harden
Square Fields (Hard)0.0082456617932%7.5Harden