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optimistic_cohen_388
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Optimistic Cohen
optimistic_cohen_388
Ukraine
Ukraine
Joined Oct 29, 2025
Overview
Problems8
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2025
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optimistic_cohen_388 solved problem Beautiful Array (#350) on 3 attempt1 month ago
optimistic_cohen_388 has joined contest UOI 2025. I stage1 month ago
optimistic_cohen_388 has joined contest Задачі типу А1 month ago
optimistic_cohen_388 solved problem Catamarans (#381) on first attempt1 month ago
optimistic_cohen_388 has joined contest UOI 2025. II stage. Day 21 month ago
optimistic_cohen_388 solved problem What the ZNO leads to... (#6) on 3 attempt1 month ago
optimistic_cohen_388 solved problem Difficult times (#5) on 3 attempt1 month ago
optimistic_cohen_388 solved problem Transportation Dilemma (#4) on 2 attempt1 month ago
optimistic_cohen_388 solved problem Petryk and the exam (#3) on first attempt1 month ago
optimistic_cohen_388 solved problem Mean arithmetic (#2) on first attempt1 month ago
optimistic_cohen_388 solved problem Debts (#1) on first attempt1 month ago
optimistic_cohen_388 has joined contest UOI 2023. I stage1 month ago