Problems
Arena
30 Days of Sincerity
Condition Achieve max streak of 30 days13K
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
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
Season 2021 — Gold II
Condition Reached Gold II in Season 20212.7K
시즌 2 골드 2
Condition 시즌 2에 골드 2 달성4.5K
시즌 3 골드 2
Condition 시즌 3에 골드 2 달성6K