Problems
Arena
30 Days of Sincerity
Condition Achieve max streak of 30 days12K
100 Days of Consistency
Condition Achieve max streak of 100 days4.4K
All Solve! — Bronze V
Condition Solved every Bronze V problem after November 30th, 20212.4K
All Solve! — Bronze IV
Condition Solved every Bronze IV problem after November 30th, 2021559
All Solve! — Bronze III
Condition Solved every Bronze III problem after November 30th, 2021112
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
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
200 Days of Diligence
Condition Achieve max streak of 200 days2.1K
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, 20226.3K
Green Matrix Grid: Dark Mode
More epic green matrix grid
Condition (Hidden)9.7K
Icons: Dark Mode
Icons in solved.ac, now in dark mode.
Condition (Hidden)4.7K
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
Season 2021 — Diamond II
Condition Reached Diamond II in Season 202165
Midsummer Memories
Condition Achieve a score of over 1,800 in the Postcard Decoration Event 20221.4K
IOI 2022 Indonesia
Condition Participated in the Cheering Event of IOI 2022 Korean Representatives1.5K
The 1st Chocolate Cup
Condition Solved 1 or more problems in the 1st Chocolate Cup192
ICPC World Finals Dhaka
Condition Participated in ICPC World Finals Dhaka Cheering Event871
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
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
Full Binary Christmas Tree
Condition Reach level 4 or deeper on the deepest ornament card in the Make a Tree event, 20221.1K