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Lev_ruban1
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Lev_Ruban
Lev_ruban1
Ukraine
Ukraine
Joined Jan 1, 1
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Lev_ruban1 has joined contest Задачі типу B9 days ago
Lev_ruban1 solved problem Catamarans (#381) on 2 attempt9 months ago
Lev_ruban1 has joined contest UOI 2025. II stage. Day 29 months ago
Lev_ruban1 solved problem Філателія (#355) on 4 attempt11 months ago
Lev_ruban1 has joined contest UOI 2025. I stage. Kharkiv11 months ago
Lev_ruban1 has joined contest UOI 2024. II stage. Day 11 year ago
Lev_ruban1 has joined contest UOI 2013. II stage. Day 12 years ago