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chyckchyryk
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Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (52)
Hello WorldEasy StartTough NutHardmodeBeyond the LimitHalfway ThereBy a whiskerProblem SolverProblem Solver 2Sea LionSnake TamerPhoto Finish
OverviewRatingAchievementsPosts
Rating
1764
Problems222
Submissions301
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Rating evolution

chyckchyryk has completed the contest Weekend Practice #25 and scored no score3 hours ago
chyckchyryk has joined contest Weekend Practice #251 day ago
chyckchyryk earned achievement Specialist12 days ago
chyckchyryk earned achievement Student12 days ago
chyckchyryk earned achievement Explorer12 days ago
chyckchyryk earned achievement Photo Finish12 days ago
chyckchyryk has completed the contest Blitz Round #22 and scored no score29 days ago
chyckchyryk has joined contest Blitz Round #2230 days ago
chyckchyryk has joined contest KPI Open 20261 month ago
chyckchyryk has completed the contest Blitz Round #21 and scored 575 points2 months ago
chyckchyryk solved problem Duel of Frequencies (#12467) on first attempt2 months ago
chyckchyryk solved problem Echoes of the Square (#12468) on first attempt2 months ago
chyckchyryk solved problem The Glitchy Robot (#12466) on first attempt2 months ago
chyckchyryk solved problem The Efficient Steps (#12465) on first attempt2 months ago
chyckchyryk has joined contest Blitz Round #212 months ago
chyckchyryk has completed the contest Blitz Round #20 and scored no score3 months ago
chyckchyryk has joined contest Blitz Round #203 months ago
chyckchyryk has joined contest UOI 2026. Day 23 months ago
chyckchyryk has completed the contest Blitz Round #19 and scored no score3 months ago
chyckchyryk has joined contest Blitz Round #193 months ago
chyckchyryk has completed the contest Blitz Round #18 and scored 700 points4 months ago
chyckchyryk solved problem Nasser's OR Removal (#12433) on first attempt4 months ago
chyckchyryk solved problem Rufo's massive (#12430) on 5 attempt4 months ago
chyckchyryk solved problem Nasser's Prime Slices (#12432) on 5 attempt4 months ago
chyckchyryk has joined contest Blitz Round #184 months ago