Problems from Google Code Jam Practice Problems

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Alien Numbers0.001255273261450%2.6Easyen
Shopping Plan0.0015141133127%8.0Harden
Square Fields (Easy)0.0081229713044%5.7Harden
Square Fields (Hard)0.0082454317733%7.2Harden