Problems from Central Europe Regional Contest (CERC) 2012

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Chemist's vows 775 196 25% 0.00 145 124 86% 3.9
Conservation 819 296 36% 0.27 176 153 87% 4.8
Darts 1496 739 49% 0.03 568 497 88% 2.5
Graphic Madness 70 12 17% 0.01 17 12 71% 7.4
Jewel Heist 107 33 31% 0.84 34 27 79% 6.7
Kingdoms 308 71 23% 0.29 85 49 58% 7.7
Non-boring sequences 695 212 31% 0.07 136 88 65% 6.4
The Dragon and the Knights 137 42 31% 0.20 40 36 90% 4.9
Who Wants to Live Forever? 251 30 12% 0.01 55 27 49% 7.1
Word Equations 131 28 21% 0.05 39 25 64% 7.6