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mark_kos
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Mark
mark_kos
Proficient
Belarus
Belarus
Joined Oct 8, 2022
Achievements (52)
Hello WorldEasy StartTough NutHalfway ThereBy a whiskerProblem SolverSea LionOld SchoolLong Time No ACEolymp Cup ParticipantExplorerStudent
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1214
Problems105
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mark_kos earned achievement Student27 days ago
mark_kos earned achievement Explorer27 days ago
mark_kos solved hidden problem on first attempt3 months ago
mark_kos solved hidden problem on 3 attempt3 months ago
mark_kos solved hidden problem on 2 attempt3 months ago
mark_kos solved hidden problem on first attempt3 months ago
mark_kos solved hidden problem on 2 attempt3 months ago
mark_kos solved hidden problem on first attempt3 months ago
mark_kos solved hidden problem on first attempt3 months ago
mark_kos has joined contest Educational Round #103 months ago
mark_kos has joined contest Eolymp Cup #12 years ago
mark_kos solved hidden problem on 2 attempt2 years ago
mark_kos solved hidden problem on 2 attempt2 years ago
mark_kos solved hidden problem on 4 attempt2 years ago
mark_kos solved hidden problem on first attempt2 years ago
mark_kos solved hidden problem on first attempt2 years ago
mark_kos solved hidden problem on first attempt2 years ago
mark_kos solved hidden problem on first attempt2 years ago