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chyckchyryk
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Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (54)
Hello WorldEasy StartTough NutHardmodeBeyond the LimitHalfway ThereBy a whiskerProblem SolverProblem Solver 2Sea LionSnake TamerPhoto Finish
OverviewRatingAchievements
Rating
1707
Problems224
Submissions303
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Rating evolution

chyckchyryk has joined contest Blitz Round #233 hours ago
chyckchyryk has joined contest USACO 2015 January4 days ago
chyckchyryk has completed the contest Weekend Practice #26 and scored 250 points12 days ago
chyckchyryk solved problem Maximum Sum (#12782) on first attempt12 days ago
chyckchyryk solved problem Minimum Substring Length (#12781) on 2 attempt12 days ago
chyckchyryk has joined contest Weekend Practice #2612 days ago
chyckchyryk has completed the contest Weekend Practice #25 and scored no score25 days ago
chyckchyryk has joined contest Weekend Practice #2526 days ago
chyckchyryk earned achievement Specialist1 month ago
chyckchyryk earned achievement Student1 month ago
chyckchyryk earned achievement Explorer1 month ago
chyckchyryk earned achievement Photo Finish1 month ago
chyckchyryk has completed the contest Blitz Round #22 and scored no score2 months ago
chyckchyryk has joined contest Blitz Round #222 months ago
chyckchyryk has joined contest KPI Open 20262 months ago
chyckchyryk has completed the contest Blitz Round #21 and scored 575 points3 months ago
chyckchyryk solved problem Duel of Frequencies (#12467) on first attempt3 months ago
chyckchyryk solved problem Echoes of the Square (#12468) on first attempt3 months ago
chyckchyryk solved problem The Glitchy Robot (#12466) on first attempt3 months ago
chyckchyryk solved problem The Efficient Steps (#12465) on first attempt3 months ago
chyckchyryk has joined contest Blitz Round #213 months ago
chyckchyryk has completed the contest Blitz Round #20 and scored no score4 months ago
chyckchyryk has joined contest Blitz Round #204 months ago
chyckchyryk has joined contest UOI 2026. Day 24 months ago
chyckchyryk has completed the contest Blitz Round #19 and scored no score4 months ago