Problems
Arena
You Win!
Participate as a rated contestant in the Arena and increase your rating
Participate as a rated contestant in the Arena and increase your rating
3.1K
On a Roll
Participate as a rated contestant in the Arena and increase your rating 3 times in a row
Participate as a rated contestant in the Arena and increase your rating 3 times in a row
1.1K
Unstoppable
Participate as a rated contestant in the Arena and increase your rating 5 times in a row
Participate as a rated contestant in the Arena and increase your rating 5 times in a row
527
Hopefully This Badge Will Help You Keep Calm
Participate as a rated contestant in the Arena and decrease your rating
Participate as a rated contestant in the Arena and decrease your rating
367
Arena: Top 10
Participate as a rated contestant in the Arena and achieve a rank of top 10 or greater
Participate as a rated contestant in the Arena and achieve a rank of top 10 or greater
151
Arena: Top 20
Participate as a rated contestant in the Arena and achieve a rank of top 20 or greater
Participate as a rated contestant in the Arena and achieve a rank of top 20 or greater
246
Arena: Top 50
Participate as a rated contestant in the Arena and achieve a rank of top 50 or greater
Participate as a rated contestant in the Arena and achieve a rank of top 50 or greater
574
Arena: Top 100
Participate as a rated contestant in the Arena and achieve a rank of top 100 or greater
Participate as a rated contestant in the Arena and achieve a rank of top 100 or greater
972
Speedy
Participate as a rated contestant in the Arena and get full score for a problem within 5 minutes of the start of the competition
Participate as a rated contestant in the Arena and get full score for a problem within 5 minutes of the start of the competition
821
Rapid
Participate as a rated contestant in the Arena and get full score for a problem within 3 minutes of the start of the competition
Participate as a rated contestant in the Arena and get full score for a problem within 3 minutes of the start of the competition
586
Arena: Half Solves
Participate as a rated contestant in the Arena and get full score for half or more of the problems in the contest
Participate as a rated contestant in the Arena and get full score for half or more of the problems in the contest
510
Arena: Quarter Solves
Participate as a rated contestant in the Arena and get full score for quarter or more of the problems in the contest
Participate as a rated contestant in the Arena and get full score for quarter or more of the problems in the contest
1.3K
Arena: Quarter Solves × 5
Participate as a rated contestant for 5 times in the Arena and get full score for quarter or more of the problems in the contest
Participate as a rated contestant for 5 times in the Arena and get full score for quarter or more of the problems in the contest
189
Record of the Stars: Chapter 1
Participate as a rated contestant in the Arena
Participate as a rated contestant in the Arena
3.2K
Record of the Stars: Chapter 2
Participate as a rated contestant for 5 times in the Arena
Participate as a rated contestant for 5 times in the Arena
607
Creator of the Stars: Chapter 1
Participate as a jury, a tester, or a staff in the Arena
Participate as a jury, a tester, or a staff in the Arena
172
UCPC 2023
UCPC 2023 혹은 Open Contest에 출전
UCPC 2023 혹은 Open Contest에 출전
873
2023 KSA Automata Summer Contest
2023 KSA Automata Summer Contest에 출전해 100점 이상 달성
2023 KSA Automata Summer Contest에 출전해 100점 이상 달성
398
제3회 고려대학교 MatKor Cup : 2023 Summer
제3회 고려대학교 MatKor Cup : 2023 Summer 혹은 Open Contest Phase 1, Phase 2 중 하나 이상에 출전
제3회 고려대학교 MatKor Cup : 2023 Summer 혹은 Open Contest Phase 1, Phase 2 중 하나 이상에 출전
490
2023 제1회 춘배컵
2023 제1회 춘배컵에 출전해 한 문제 이상 해결 · ©올소
2023 제1회 춘배컵에 출전해 한 문제 이상 해결 · ©올소
438