Problems
Arena
Sejong Lake Park
The largest artificial lake park in the Republic of Korea.
Condition Participated in SASA Programming Contest 2021, or solved 1 or more problems in its Open Contest173
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
On the Way to Work
Wanna take the bus to the otherworldly?
Condition Participated in Sogang Programming Contest 2021, or its Open Contest132
All Solve! — Bronze IV
Condition Solved every Bronze IV problem after November 30th, 2021551
All Solve! — Bronze V
Condition Solved every Bronze V problem after November 30th, 20212.3K
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
100 Days of Consistency
Condition Achieve max streak of 100 days4.2K
30 Days of Sincerity
Condition Achieve max streak of 30 days12K
Season 2020 — Silver I
Condition Reached Silver I in Season 20201.3K