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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
1719
Problems135
Submissions201
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2026

Rating evolution

chyckchyryk has completed the contest Blitz Round #12 and scored 425 points6 hours ago
chyckchyryk solved problem Interviews (#12339) on first attempt7 hours ago
chyckchyryk solved problem Or Sum (#12338) on 2 attempt8 hours ago
chyckchyryk solved problem I hate 67 (#12337) on first attempt8 hours ago
chyckchyryk has joined contest Blitz Round #128 hours ago
chyckchyryk solved problem N-digit numbers (#9) on first attempt3 days ago
chyckchyryk has completed the contest Weekend Practice #18 and scored no score7 days ago
chyckchyryk has joined contest Weekend Practice #187 days ago
chyckchyryk solved problem Kaosar and Segments (#12325) on first attempt13 days ago
chyckchyryk solved problem Kaosar and AND (#12324) on first attempt13 days ago
chyckchyryk solved problem Kaosar and Loop (#12326) on 3 attempt13 days ago
chyckchyryk solved problem Kaosar and Counting (#12328) on 2 attempt14 days ago
chyckchyryk solved problem Reverse the graph (#10048) on first attempt14 days ago
chyckchyryk solved problem Cutting a stick (#11261) on first attempt14 days ago
chyckchyryk solved problem Expected Minimum Power (#11262) on first attempt14 days ago
chyckchyryk solved problem Massive Numbers (#1213) on 9 attempt14 days ago
chyckchyryk solved problem Grassland Fence (#1526) on first attempt14 days ago
chyckchyryk solved problem Vasya and matrix (#3535) on 2 attempt14 days ago
chyckchyryk solved problem Transport system (#9635) on first attempt14 days ago
chyckchyryk solved problem Breed Counting (#11159) on first attempt14 days ago
chyckchyryk solved problem Minimum spanning tree (#981) on first attempt14 days ago
chyckchyryk solved problem Arithmetic mean for figure skaters (#7368) on 2 attempt14 days ago
chyckchyryk has joined contest Educational Round #714 days ago
chyckchyryk has completed the contest Blitz Round #11 and scored no score14 days ago
chyckchyryk has joined contest Blitz Round #1120 days ago