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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
OverviewRatingAchievements
Rating
1707
Problems224
Submissions303

Rating evolution

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chyckchyryk has completed the contest Weekend Practice #26 and scored 250 points6 日前
chyckchyryk solved hidden problem on first attempt6 日前
chyckchyryk solved hidden problem on 2 attempt6 日前
chyckchyryk has joined contest Weekend Practice #266 日前
chyckchyryk has completed the contest Weekend Practice #25 and scored no score18 日前
chyckchyryk has joined contest Weekend Practice #2520 日前
chyckchyryk earned achievement Specialist1 か月前
chyckchyryk earned achievement Student1 か月前
chyckchyryk earned achievement Explorer1 か月前
chyckchyryk earned achievement Photo Finish1 か月前
chyckchyryk has completed the contest Blitz Round #22 and scored no score2 か月前
chyckchyryk has joined contest Blitz Round #222 か月前
chyckchyryk has joined contest KPI Open 20262 か月前
chyckchyryk has completed the contest Blitz Round #21 and scored 575 points3 か月前
chyckchyryk solved problem Duel of Frequencies (#12467) on first attempt3 か月前
chyckchyryk solved problem Echoes of the Square (#12468) on first attempt3 か月前
chyckchyryk solved problem The Glitchy Robot (#12466) on first attempt3 か月前
chyckchyryk solved problem The Efficient Steps (#12465) on first attempt3 か月前
chyckchyryk has joined contest Blitz Round #213 か月前
chyckchyryk has completed the contest Blitz Round #20 and scored no score3 か月前
chyckchyryk has joined contest Blitz Round #203 か月前
chyckchyryk has joined contest UOI 2026. Day 24 か月前
chyckchyryk has completed the contest Blitz Round #19 and scored no score4 か月前
chyckchyryk has joined contest Blitz Round #194 か月前
chyckchyryk has completed the contest Blitz Round #18 and scored 700 points4 か月前