Problems from Central Europe Regional Contest (CERC) 2012

Submissions Users
Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
Chemist's vows 305 79 26% 0.00 88 68 77% 5.3
Conservation 489 182 37% 0.27 105 91 87% 4.5
Darts 1237 598 48% 0.03 462 400 87% 2.6
Graphic Madness 63 11 17% 0.01 14 11 79% 6.6
Jewel Heist 88 24 27% 0.84 27 21 78% 6.5
Kingdoms 271 62 23% 0.29 72 42 58% 6.7
Non-boring sequences 629 189 30% 0.07 106 69 65% 6.8
The Dragon and the Knights 105 36 34% 0.20 35 33 94% 4.0
Who Wants to Live Forever? 223 23 10% 0.01 45 21 47% 7.6
Word Equations 117 21 18% 0.05 33 20 61% 8.3