Problems
Arena
UCPC 2020
Condition Participated in UCPC 2020 Finals354
Season 2020 — Gold I
Condition Reached Gold I in Season 2020665
TRICK|TREAT 2021
Solved a problem in Halloween 2021
Condition Solved previously unsolved problem at between October 31st, 2021 06:00 and November 1st, 2021 06:00 (KST)2.6K
Pocky Day 2021
Solved a problem in Pocky day 2021
Condition Solved previously unsolved problem at between November 11th, 2021 06:00 and November 12th, 2021 06:00 (KST)3.3K
Stars in the Evening Sky
She who has a star in her heart never gets lost in the dark
Condition Bought the background at the coin shop2.6K
Merry Christmas 2021
Solved a problem in Christmas or Christmas Eve 2021
Condition Solve 1 or more previously unsolved problems between 6:00 AM on December 24, 2021 and 6:00 AM on December 26, 20213.5K
Good Bye, BOJ 2021!
Good Bye, 2021!
Condition Solved 1 or more problems in Good Bye, BOJ 2021!646
God's Queries on This Wonderful Arrays!
Seeing that the value written in the Nth sequence in front of your house changes every day, you became angry and decided to sue Hanbyeol.
Condition Solve 1 or more problems which has '수열' or '쿼리' in its Korean version of the title, at some point after March 22, 20226K
Real Final Ghudegy Cup 2 2
Please make a poster 2 (I won't)
Condition Solved uncountable problem in Real Final Ghudegy Cup 2 2754
If you need more burgers or coke, please feel free to ask our staff 2
We will eat burgers if you ask us 2
Condition Solved uncountable problem in Real Final Ghudegy Cup 2 2754
Sogang Freshman Programming Contest 2022
This problem is too easy. It is very trivial.
Condition Participated in 2022 Sogang University Freshman Contest, or solved more than 2 problems in its open contest336
Season 2021 — Platinum IV
Condition Reached Platinum IV in Season 2021828
Inha University Programming Contest 2022
Condition Solved 1 or more problems in Inha University Programming Contest 2022, or in its open contest293
IOI 2022 Indonesia
Condition Participated in the Cheering Event of IOI 2022 Korean Representatives1.5K
Red Periscope
The famous Red Periscope of Sinchon.
Condition Participated in 2022 ICPC Sinchon Summer Algorithm Camp Contest, or solved 1 or more problems in its open contest389
Black and White
Life, like backgammon, is constant decision-making under uncertainty.
Condition Solved 3 or more problems in the Boardgame Cup481
꿈과 희망의 수호자 마법소녀
마법소녀는 모두의 꿈과 희망을 이루어주는 존재입니다.
Condition 아니메컵 1쿨에 출전해 1문제 이상 해결636
SUAPC 2023w
Condition SUAPC 2023 Winter에 출전, 혹은 Open Contest에 출전해 한 문제 이상 해결381
2023 UDPC
Condition 2023 UDPC에 출전, 혹은 Open Contest에 출전해 두 문제 이상 해결231
최후의 가지
Condition 2023 가지컵에 출전해 한 문제 이상 해결335