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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
1768
Problems164
Submissions232
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2026

Rating evolution

chyckchyryk has completed the contest Blitz Round #13 and scored 675 points3 days ago
chyckchyryk solved problem Nasser and Palindromic Shifts (#12350) on 4 attempt4 days ago
chyckchyryk solved problem Nasser's Array Reduction (#12349) on first attempt4 days ago
chyckchyryk solved problem Nasser's Card Game (#12347) on 2 attempt4 days ago
chyckchyryk solved problem Nasser and permutation (#12348) on first attempt4 days ago
chyckchyryk has joined contest Blitz Round #134 days ago
chyckchyryk solved problem Divisibility (#1534) on 4 attempt9 days ago
chyckchyryk solved problem Rooks on a chessboard (#1327) on first attempt9 days ago
chyckchyryk solved problem Hockey Tournament Medals (#1326) on 3 attempt9 days ago
chyckchyryk solved problem License plate (#1290) on first attempt9 days ago
chyckchyryk solved problem Lunch (#1289) on 2 attempt9 days ago
chyckchyryk solved problem Tennis competitions (#1287) on first attempt9 days ago
chyckchyryk solved problem School canteen (#1286) on first attempt9 days ago
chyckchyryk solved problem Permutation of letters (#843) on first attempt9 days ago
chyckchyryk solved problem Dictionary (#364) on first attempt9 days ago
chyckchyryk solved problem Memory (#466) on first attempt9 days ago
chyckchyryk solved problem Anagrams (#390) on 2 attempt9 days ago
chyckchyryk solved problem Spell Matrices (#566) on first attempt9 days ago
chyckchyryk solved problem Circles - 2 (#201) on 2 attempt9 days ago
chyckchyryk solved problem Square (#124) on first attempt9 days ago
chyckchyryk solved problem Certification (#30) on 6 attempt9 days ago
chyckchyryk solved problem Gardener-painter (#17) on 2 attempt9 days ago
chyckchyryk has joined contest Weekend Practice #1314 days ago
chyckchyryk has joined contest Weekend Practice #814 days ago
chyckchyryk has joined contest Weekend Practice #714 days ago