Achievement: Emerald
Emerald
15000 XP
Has a chance to trigger once a day on an easy ddk problem.
307 users completed this achievement.
Completed by klaussklau, Iliyanbruen,
Женя Федотов, 
Larry quinoa, KomokuCat, 
Paxan Kochurov, Hanagasumi, nussbrot, 
Pierre-Marie GORI, drchr and more.
