Problems
Arena
Season 2020 — Silver IV
Condition Reached Silver IV in Season 20201.4K
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 shop1.5K
Standard Library
Celebrated the 1st anniversary of solved.ac
Condition Solved previously unsolved problem at between May 31st, 2021 00:00 and June 8th, 2021 00:00 (KST)5K
30 Days of Sincerity
Condition Achieve max streak of 30 days13K
100 Days of Consistency
Condition Achieve max streak of 100 days4.6K
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 shop2.9K
200 Days of Diligence
Condition Achieve max streak of 200 days2.3K
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, 20226.8K
Green Matrix Grid: Dark Mode
More epic green matrix grid
Condition (Hidden)10K
Icons: Dark Mode
Icons in solved.ac, now in dark mode.
Condition (Hidden)5K
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 — Gold IV
Condition Reached Gold IV in Season 20213.2K
UCPC 2022
Condition Participated in UCPC 2022, or in its open contest996
365 Days of Brilliance
Condition Achieve max streak of 365 days1.2K
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
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
ICPC World Finals Dhaka
Condition Participated in ICPC World Finals Dhaka Cheering Event871