Problems
Arena
Full Binary Christmas Tree
Condition Reach level 4 or deeper on the deepest ornament card in the Make a Tree event, 20221.1K
2022 1st Calculus, Probability, and Statistics Cup
Condition Solved 1 or more problems in the 2022 1st Calculus, Probability, and Statistics Cup360
2022 Seoul Cyber University Programming Contest
Condition Participated in 2022 Seoul Cyber University Programming Contest, or solved 1 or more problems in its open contest340
The 9th Hanyang University Programming Contest
Condition Participated in the 9th Hanyang University Programming Contest, or solved 1 or more problems in its open contest284
Walking Through the Winter Forest
To feel the beauty of snowflakes, one must endure the cold.
Condition Solved 1 or more problems in the Invitation of the Winter Forest466
Sogang Programming Contest 2022
Be as proud of Sogang as Sogang is proud of you.
Condition Participated in Sogang Programming Contest 2022292
The 1st Chocolate Cup
Condition Solved 1 or more problems in the 1st Chocolate Cup192
Chung-Ang University Programming Contest 2022
Condition Participated in Chung-Ang University Programming Contest 2022, or solved 2 or more problems in its open contest218
Midsummer Memories
Condition Achieve a score of over 1,800 in the Postcard Decoration Event 20221.4K
UCPC 2022
Condition Participated in UCPC 2022, or in its open contest996
Season 2021 — Silver I
Condition Reached Silver I in Season 20213.9K
Magician of the Library
Celebrated the 2nd anniversary of solved.ac
Condition Solve 1 or more previously unsolved problems between 6:00 AM on May 30, 2022 and 6:00 AM on June 6, 20229.7K
Green Matrix Grid: Dark Mode
More epic green matrix grid
Condition (Hidden)9.7K
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, 20226.2K
200 Days of Diligence
Condition Achieve max streak of 200 days2.1K
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 shop2.7K
All Solve! — Bronze V
Condition Solved every Bronze V problem after November 30th, 20212.4K
100 Days of Consistency
Condition Achieve max streak of 100 days4.4K
30 Days of Sincerity
Condition Achieve max streak of 30 days12K
If you need more burgers or coke, please feel free to ask our staff
We will eat burgers if you ask us
Condition Participated in EtvycAuRLZpb6hhe86x0, or bought the background at the coin shop1.4K