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Kostka
kostka
Poland
Poland
Joined Aug 7, 2023
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kostka has joined contest EJOI 2024, Day 214 days ago
kostka has joined contest EJOI 2024, Day 114 days ago
kostka has joined contest EJOI 2025 - Day 214 days ago
kostka has joined contest EJOI 2025 - Day 114 days ago
kostka solved hidden problem on first attempt2 months ago
kostka has joined contest BaltOI 2024, Day 12 months ago