Achievement: Speed XII

Speed XII

12000 XP

Finish a collection of 4k or higher with an avg. time of under 10 seconds.*

*The collection must contain at least 100 problems.

39 users completed this achievement.

Completed by Алёна Киреева, MalikKarimov, nepro, StephaneLamy, YuriyStepanovich, Naxe, Zhangqiyue, Evgene333, Dobroslav, MOKYNOH and more.