Achievement: Speed I

Uncommon

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Speed I

Finish a collection of 11k or lower with an avg. time of under 15 seconds.*

*The collection must contain at least 100 problems.

Recently completed by

Thibaut Perrin 3k, Wearep05 6k, Dolgop_Kost 11k, Алёна Киреева 10k, Nataphat 16k, Daler 13k, Amir Alimov 11k, franky 11k, seihoukei 10k, Sans Francisco 3k

and 1663 others.