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chyckchyryk
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Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (1)
Problem Solver
OverviewRatingAchievementsPosts
Rating
1790
Problems192
Submissions264
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Rating evolution

chyckchyryk has completed the contest Weekend Practice #20 and scored 385 points2 days ago
chyckchyryk solved problem Fruit Feast (#11161) on first attempt3 days ago
chyckchyryk solved problem Corona2020 (#10029) on first attempt3 days ago
chyckchyryk solved problem Weighing (#1993) on first attempt3 days ago
chyckchyryk solved problem Interval Less Query (#5084) on first attempt3 days ago
chyckchyryk solved problem Add All (#1228) on first attempt3 days ago
chyckchyryk solved problem Pair Sum Divisibility (#8548) on first attempt3 days ago
chyckchyryk solved problem Split (#12368) on 2 attempt3 days ago
chyckchyryk has joined contest Educational Round #93 days ago
chyckchyryk has joined contest Weekend Practice #203 days ago
chyckchyryk solved problem Yet Another Array Problem (#12363) on first attempt9 days ago
chyckchyryk solved problem Kaosar and M(ex+od) (#12362) on first attempt9 days ago
chyckchyryk solved problem Please be easy! (#12361) on first attempt9 days ago
chyckchyryk has joined contest Blitz Round #1511 days ago
chyckchyryk solved problem Knight move (#4021) on first attempt14 days ago
chyckchyryk solved problem Joseph Problem (#5023) on 2 attempt14 days ago
chyckchyryk solved problem Maximum Sum basic (#5854) on first attempt14 days ago
chyckchyryk solved problem Ice-Cream (#4035) on first attempt14 days ago
chyckchyryk solved problem Turtle restoring (#4019) on first attempt14 days ago
chyckchyryk solved problem Turtle (#4018) on first attempt14 days ago
chyckchyryk solved problem Save Walle (#3257) on 3 attempt14 days ago
chyckchyryk solved problem Clever turtle (#1704) on first attempt14 days ago
chyckchyryk solved problem Route (#838) on first attempt14 days ago
chyckchyryk has joined contest WEEK17_2 DYNAMIC14 days ago
chyckchyryk solved hidden problem on 2 attempt14 days ago