Problems from Central Europe Regional Contest (CERC) 2013

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Bus0.0056734369755%1.7Easyen
Captain Obvious and the Rabbit-Man0.412511414129%5.7Harden
Chain & Co.0.2215441332317%6.3Harden
Crane0.0258530112441%5.3Mediumen
Digraphs0.0010673988020%5.9Harden
Draughts0.0156472328139%3.4Mediumen
Escape0.3310015358215%8.4Harden
Magical GCD0.26128103630429%5.4Mediumen
Rubik's Rectangle0.2118581202118%8.4Harden
Subway0.4218001682112%8.0Harden
What does the fox say?0.007011980534945%2.0Easyen