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hackjs
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Захар Чайківський
hackjs
Ukraine
Ukraine
Joined Jun 23, 2024
Overview
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hackjs solved problem Intersection of Prefix Sums (#526) on 11 attempt4 months ago
hackjs solved problem Unique Letters (#525) on 4 attempt4 months ago
hackjs has joined contest UOI 2026. Day 14 months ago
hackjs has joined contest UOI 2023. II stage. Day 28 months ago
hackjs has joined contest UOI 2023. II stage. Day 18 months ago
hackjs has joined contest Тренувальний тур I етапу Всеукраїнської олімпіади з інформатики12 months ago
hackjs solved problem Sakurako and Her Trip (#407) on 29 attempt1 year ago
hackjs solved problem UJGOI in Cracow (#406) on 21 attempt1 year ago
hackjs solved problem Debts (#1) on first attempt1 year ago
hackjs solved problem Cracow Sights (#405) on first attempt1 year ago
hackjs has joined contest UJGOI 2025. Day 11 year ago
hackjs has joined contest UOI 2025. Тренувальний тур2 years ago
hackjs solved problem Movies (#380) on first attempt2 years ago
hackjs solved problem Catamarans (#381) on 6 attempt2 years ago
hackjs solved problem Diagonal Numbers (#382) on first attempt2 years ago
hackjs has joined contest UOI 2021. Day 12 years ago
hackjs has joined contest UJGOI 2025. Vidbir. Day 12 years ago
hackjs solved problem Sakurako and a Christmas Array (#351) on 5 attempt2 years ago
hackjs solved problem Beautiful Array (#350) on 3 attempt2 years ago
hackjs solved problem Beautiful String (#349) on 2 attempt2 years ago
hackjs solved problem Sakurako is Late (#348) on first attempt2 years ago
hackjs solved problem Balls and Bins (#347) on first attempt2 years ago
hackjs solved problem Cook the Homework (#346) on 2 attempt2 years ago
hackjs solved problem Coordinates (#345) on first attempt2 years ago
hackjs solved problem Rook (#344) on first attempt2 years ago