Problems from Central Europe Regional Contest (CERC) 2012

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Chemist's vows0.00433189853528%3.0Mediumen
Conservation0.11302315895530%4.7Mediumen
Darts0.02932481122349%2.1Easyen
Graphic Madness0.0118071382216%7.7Harden
Jewel Heist0.7514892506526%6.5Harden
Kingdoms0.297123828522%6.6Harden
Non-boring sequences0.0758595026728%6.5Harden
The Dragon and the Knights0.177393626518%4.9Mediumen
Who Wants to Live Forever?0.014005225210%8.3Harden
Word Equations0.05100055610819%7.2Harden