Problems from Central Europe Regional Contest (CERC) 2013

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bus0.0056654364155%1.7Easyen
Captain Obvious and the Rabbit-Man0.412511163833%6.5Harden
Chain & Co.0.221544961819%7.1Harden
Crane0.0258527712043%5.6Harden
Digraphs0.0010673747620%6.2Harden
Draughts0.0156469826638%3.5Mediumen
Escape0.3310015018116%8.4Harden
Magical GCD0.26128101429829%5.5Harden
Rubik's Rectangle0.2118581032120%8.3Harden
Subway0.4218001361914%8.2Harden
What does the fox say?0.007011820527645%1.9Easyen