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chyckchyryk
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Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
OverviewRatingPosts
Rating
1681
Problems58
Submissions59

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chyckchyryk solved problem Toasts (#510) on 3 attempt16 hours ago
chyckchyryk solved problem Painting the Barn (Silver) (#10345) on 2 attempt16 hours ago
chyckchyryk solved problem Building Construction (#10869) on first attempt16 hours ago
chyckchyryk solved problem ADA School (#10271) on first attempt16 hours ago
chyckchyryk solved problem Palindrome Partitioning (#11245) on 4 attempt17 hours ago
chyckchyryk solved problem The longest Path (#11452) on 2 attempt17 hours ago
chyckchyryk has completed the contest Blitz Round #5 and scored 370 points1 day ago
chyckchyryk has joined contest Educational Round #41 day ago
chyckchyryk solved problem Kaosar And Game (#12261) on 9 attempt1 day ago
chyckchyryk solved problem Collatz Beauty (#12259) on 3 attempt1 day ago
chyckchyryk solved problem Kaosar And Diagonals (#12260) on 2 attempt1 day ago
chyckchyryk has joined contest Blitz Round #51 day ago
chyckchyryk solved problem Ones (#622) on first attempt2 days ago
chyckchyryk solved problem The sum of powers of two (#2733) on first attempt2 days ago
chyckchyryk solved problem The number of integers Mersenns (#1354) on 2 attempt2 days ago
chyckchyryk solved problem Bitset (#2802) on 2 attempt2 days ago
chyckchyryk solved problem Cubes - 3 (#2807) on 3 attempt2 days ago
chyckchyryk solved problem C0n + ... + Cnn (#9892) on first attempt2 days ago
chyckchyryk solved problem The following number 4 (#8899) on first attempt2 days ago
chyckchyryk solved problem Degree of two (#8670) on 2 attempt2 days ago
chyckchyryk solved problem Vasina distance between numbers (#5712) on first attempt2 days ago
chyckchyryk solved problem Maximal XOR (#1651) on first attempt2 days ago
chyckchyryk solved problem Bit value (#5317) on first attempt2 days ago
chyckchyryk solved problem Set a bit (#5315) on first attempt2 days ago
chyckchyryk solved problem Slowdown Sprint (#12234) on 2 attempt2 days ago