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hackjs
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Захар Чайківський
hackjs
Ukraine
Ukraine
Joined Jun 23, 2024
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hackjs solved problem Intersection of Prefix Sums (#526) on 11 attempt1 month ago
hackjs solved problem Unique Letters (#525) on 4 attempt1 month ago
hackjs has joined contest UOI 2026. Day 11 month ago
hackjs has joined contest UOI 2023. II stage. Day 25 months ago
hackjs has joined contest UOI 2023. II stage. Day 15 months ago
hackjs has joined contest Тренувальний тур I етапу Всеукраїнської олімпіади з інформатики9 months ago
hackjs solved problem Sakurako and Her Trip (#407) on 29 attempt11 months ago
hackjs solved problem UJGOI in Cracow (#406) on 21 attempt11 months 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 тур1 year ago
hackjs solved problem Movies (#380) on first attempt1 year ago
hackjs solved problem Catamarans (#381) on 6 attempt1 year ago
hackjs solved problem Diagonal Numbers (#382) on first attempt1 year ago
hackjs has joined contest UOI 2021. Day 11 year ago
hackjs has joined contest UJGOI 2025. Vidbir. Day 11 year ago
hackjs solved problem Sakurako and a Christmas Array (#351) on 5 attempt1 year ago
hackjs solved problem Beautiful Array (#350) on 3 attempt1 year ago
hackjs solved problem Beautiful String (#349) on 2 attempt1 year ago
hackjs solved problem Sakurako is Late (#348) on first attempt1 year ago
hackjs solved problem Balls and Bins (#347) on first attempt1 year ago
hackjs solved problem Cook the Homework (#346) on 2 attempt1 year ago
hackjs solved problem Coordinates (#345) on first attempt1 year ago
hackjs solved problem Rook (#344) on first attempt1 year ago