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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
1697
Problems114
Submissions169

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chyckchyryk solved problem Kitchen Robot (#2268) on 13 attempt3 days ago
chyckchyryk solved problem Word Processor (#9596) on first attempt4 days ago
chyckchyryk solved problem The essay (#10452) on first attempt4 days ago
chyckchyryk solved problem Cut a string (#7447) on first attempt5 days ago
chyckchyryk solved problem The post office (#2509) on first attempt5 days ago
chyckchyryk solved problem Summer (#10836) on first attempt5 days ago
chyckchyryk solved problem The kid who learned to count (#4483) on first attempt5 days ago
chyckchyryk solved problem Professor and balloons (#9405) on first attempt5 days ago
chyckchyryk has completed the contest Weekend Practice #14 and scored 400 points5 days ago
chyckchyryk has completed the contest Blitz Round #10 and scored 465 points5 days ago
chyckchyryk has joined contest Educational Round #65 days ago
chyckchyryk solved problem 2Tree Queries (#12314) on 3 attempt5 days ago
chyckchyryk solved problem Counting Pairs (#12313) on 2 attempt5 days ago
chyckchyryk solved problem Digit Queries (#12312) on first attempt5 days ago
chyckchyryk solved problem Bouncing Ball (#12311) on first attempt5 days ago
chyckchyryk has joined contest Blitz Round #106 days ago
chyckchyryk has completed the contest Weekend Practice #16 and scored 280 points12 days ago
chyckchyryk solved problem Skyline (#12306) on first attempt12 days ago
chyckchyryk solved problem Recover the array (#12305) on first attempt12 days ago
chyckchyryk has joined contest Weekend Practice #1612 days ago
chyckchyryk solved problem Akbar teacher (#12290) on 2 attempt19 days ago
chyckchyryk solved problem Pasha and permutations (#12294) on first attempt19 days ago
chyckchyryk solved problem Captain Jack Sparrow (#12293) on first attempt19 days ago
chyckchyryk solved problem Hard Game (#12292) on first attempt19 days ago
chyckchyryk solved problem Good array (#12291) on first attempt19 days ago