Basecamp
    Home
    Problems
    Contests
    Courses
    Rating
    Posts
    Store
    Discord
chyckchyryk
Sign in
Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (54)
Hello WorldEasy StartTough NutHardmodeBeyond the LimitHalfway ThereBy a whiskerProblem SolverProblem Solver 2Sea LionSnake TamerPhoto Finish
OverviewRatingAchievements
Rating
1707
Problems224
Submissions303

Rating evolution

Sep
Oct
Nov
Dec
2021
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2022
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2023
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2024
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2025
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
2026
Feb
Mar
Apr
May
Jun
Jul
chyckchyryk has completed the contest Weekend Practice #26 and scored 250 points8 days ago
chyckchyryk solved problem Maximum Sum (#12782) on first attempt8 days ago
chyckchyryk solved problem Minimum Substring Length (#12781) on 2 attempt8 days ago
chyckchyryk has joined contest Weekend Practice #268 days ago
chyckchyryk has completed the contest Weekend Practice #25 and scored no score20 days ago
chyckchyryk has joined contest Weekend Practice #2522 days ago
chyckchyryk earned achievement Specialist1 month ago
chyckchyryk earned achievement Student1 month ago
chyckchyryk earned achievement Explorer1 month ago
chyckchyryk earned achievement Photo Finish1 month ago
chyckchyryk has completed the contest Blitz Round #22 and scored no score2 months ago
chyckchyryk has joined contest Blitz Round #222 months ago
chyckchyryk has joined contest KPI Open 20262 months ago
chyckchyryk has completed the contest Blitz Round #21 and scored 575 points3 months ago
chyckchyryk solved problem Duel of Frequencies (#12467) on first attempt3 months ago
chyckchyryk solved problem Echoes of the Square (#12468) on first attempt3 months ago
chyckchyryk solved problem The Glitchy Robot (#12466) on first attempt3 months ago
chyckchyryk solved problem The Efficient Steps (#12465) on first attempt3 months ago
chyckchyryk has joined contest Blitz Round #213 months ago
chyckchyryk has completed the contest Blitz Round #20 and scored no score4 months ago
chyckchyryk has joined contest Blitz Round #204 months ago
chyckchyryk has joined contest UOI 2026. Day 24 months ago
chyckchyryk has completed the contest Blitz Round #19 and scored no score4 months ago
chyckchyryk has joined contest Blitz Round #194 months ago
chyckchyryk has completed the contest Blitz Round #18 and scored 700 points4 months ago