Problems from Central Europe Regional Contest (CERC) 2012

Name
Fastest
Shortest
Total
Acc.
Ratio
Difficulty
Languages
Chemist's vows0.00433189053328%3.0Mediumen
Conservation0.11302314095330%4.8Mediumen
Darts0.02932477121949%2.1Easyen
Graphic Madness0.0118071232218%7.4Harden
Jewel Heist0.7514892476526%6.2Harden
Kingdoms0.297123778422%6.9Harden
Non-boring sequences0.0758594726628%6.6Harden
The Dragon and the Knights0.177393446419%5.0Mediumen
Who Wants to Live Forever?0.014005005210%8.3Harden
Word Equations0.05100053210720%7.5Harden