Basecamp
    Home
    Problems
    Contests
    Courses
    Rating
    Posts
    Store
    Discord
chyckchyryk
Sign in
Roman Derkach
chyckchyryk
Candidate
Ukraine
Ukraine
Joined Aug 8, 2025
Achievements (52)
Hello WorldEasy StartTough NutHardmodeBeyond the LimitHalfway ThereBy a whiskerProblem SolverProblem Solver 2Sea LionSnake TamerPhoto Finish
OverviewRatingAchievementsPosts
Rating
1764
Problems222
Submissions301

Rating evolution

9月
10月
11月
12月
2021
2月
3月
4月
5月
6月
7月
8月
9月
10月
11月
12月
2022
2月
3月
4月
5月
6月
7月
8月
9月
10月
11月
12月
2023
2月
3月
4月
5月
6月
7月
8月
9月
10月
11月
12月
2024
2月
3月
4月
5月
6月
7月
8月
9月
10月
11月
12月
2025
2月
3月
4月
5月
6月
7月
8月
9月
10月
11月
12月
2026
2月
3月
4月
5月
6月
7月
chyckchyryk earned achievement Specialist10 日前
chyckchyryk earned achievement Student10 日前
chyckchyryk earned achievement Explorer10 日前
chyckchyryk earned achievement Photo Finish11 日前
chyckchyryk has completed the contest Blitz Round #22 and scored no score28 日前
chyckchyryk has joined contest Blitz Round #2228 日前
chyckchyryk has joined contest KPI Open 20261 か月前
chyckchyryk has completed the contest Blitz Round #21 and scored 575 points2 か月前
chyckchyryk solved problem Duel of Frequencies (#12467) on first attempt2 か月前
chyckchyryk solved problem Echoes of the Square (#12468) on first attempt2 か月前
chyckchyryk solved problem The Glitchy Robot (#12466) on first attempt2 か月前
chyckchyryk solved problem The Efficient Steps (#12465) on first attempt2 か月前
chyckchyryk has joined contest Blitz Round #212 か月前
chyckchyryk has completed the contest Blitz Round #20 and scored no score3 か月前
chyckchyryk has joined contest Blitz Round #203 か月前
chyckchyryk has joined contest UOI 2026. Day 23 か月前
chyckchyryk has completed the contest Blitz Round #19 and scored no score3 か月前
chyckchyryk has joined contest Blitz Round #193 か月前
chyckchyryk has completed the contest Blitz Round #18 and scored 700 points4 か月前
chyckchyryk solved problem Nasser's OR Removal (#12433) on first attempt4 か月前
chyckchyryk solved problem Rufo's massive (#12430) on 5 attempt4 か月前
chyckchyryk solved problem Nasser's Prime Slices (#12432) on 5 attempt4 か月前
chyckchyryk has joined contest Blitz Round #184 か月前
chyckchyryk has completed the contest Weekend Practice #22 and scored no score4 か月前
chyckchyryk has joined contest Weekend Practice #224 か月前