Problems from Central Europe Regional Contest (CERC) 2013

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bus0.0056684366455%1.7Easyen
Captain Obvious and the Rabbit-Man0.412511223831%6.7Harden
Chain & Co.0.2215441142219%6.9Harden
Crane0.0258528712343%5.4Mediumen
Digraphs0.0010673827820%6.2Harden
Draughts0.0156471227438%3.5Mediumen
Escape0.3310015108216%8.3Harden
Magical GCD0.26128102730229%5.5Harden
Rubik's Rectangle0.2118581092119%8.2Harden
Subway0.4218001421913%8.2Harden
What does the fox say?0.007011858529845%1.9Easyen