Problems from Central Europe Regional Contest (CERC) 2012

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Chemist's vows 672 179 27% 0.00 134 112 84% 4.0
Conservation 757 265 35% 0.27 162 140 86% 4.9
Darts 1407 691 49% 0.03 519 455 88% 2.5
Graphic Madness 68 12 18% 0.01 16 12 75% 7.4
Jewel Heist 101 30 30% 0.84 33 26 79% 7.0
Kingdoms 302 71 24% 0.29 84 49 58% 7.5
Non-boring sequences 674 205 30% 0.07 127 83 65% 6.4
The Dragon and the Knights 137 42 31% 0.20 40 36 90% 5.7
Who Wants to Live Forever? 250 29 12% 0.01 54 26 48% 7.2
Word Equations 127 24 19% 0.05 37 23 62% 7.8