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chyckchyryk
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Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (2)
Problem Solver 2Problem Solver
OverviewRatingAchievementsPosts
Rating
1728
Problems204
Submissions279
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Rating evolution

chyckchyryk has joined contest Blitz Round #172 時間前
chyckchyryk has completed the contest Weekend Practice #21 and scored 100 points3 日前
chyckchyryk solved problem Team Building 2 (#12411) on first attempt3 日前
chyckchyryk has joined contest Weekend Practice #21 3 日前
chyckchyryk solved problem Operate on Arrays (#12384) on first attempt10 日前
chyckchyryk solved problem MINMEX (#12382) on first attempt10 日前
chyckchyryk solved problem FindMaxLessSum (#12381) on first attempt10 日前
chyckchyryk solved problem EVEN LOVE (#12380) on first attempt10 日前
chyckchyryk has completed the contest KNU Student Olympiad 2026, 1 stage (Mirror) and scored 609 points10 日前
chyckchyryk solved hidden problem on 4 attempt11 日前
chyckchyryk solved hidden problem on first attempt11 日前
chyckchyryk solved hidden problem on first attempt11 日前
chyckchyryk solved hidden problem on first attempt11 日前
chyckchyryk solved hidden problem on first attempt11 日前
chyckchyryk solved hidden problem on first attempt11 日前
chyckchyryk has joined contest KNU Student Olympiad 2026, 1 stage (Mirror) 11 日前
chyckchyryk solved problem Reduce to one (#10272) on first attempt13 日前
chyckchyryk has completed the contest Weekend Practice #20 and scored 385 points16 日前
chyckchyryk solved problem Fruit Feast (#11161) on first attempt17 日前
chyckchyryk solved problem Corona2020 (#10029) on first attempt17 日前
chyckchyryk solved problem Weighing (#1993) on first attempt17 日前
chyckchyryk solved problem Interval Less Query (#5084) on first attempt17 日前
chyckchyryk solved problem Add All (#1228) on first attempt17 日前
chyckchyryk solved problem Pair Sum Divisibility (#8548) on first attempt17 日前
chyckchyryk solved problem Split (#12368) on 2 attempt17 日前