Problems from Central Europe Regional Contest (CERC) 2012

Name
Fastest
Shortest
Authors
Full Solves
Ratio
Difficulty
Languages
Chemist's vows0.0043339134989%3.0Mediumen
Conservation0.1130272960984%4.6Mediumen
Darts0.029398588390%2.1Easyen
Graphic Madness0.011807271556%8.0Harden
Jewel Heist0.721489704869%6.5Harden
Kingdoms0.29712985657%6.9Harden
Non-boring sequences0.0758521913763%6.5Harden
The Dragon and the Knights0.17739645484%5.8Harden
Who Wants to Live Forever?0.01321803544%8.4Harden
Word Equations0.051000864856%7.3Harden