Problems
Arena
시즌 3 골드 2
Condition 시즌 3에 골드 2 달성6K
시즌 2 골드 2
Condition 시즌 2에 골드 2 달성4.5K
Season 2021 — Gold II
Condition Reached Gold II in Season 20212.7K
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
30 Days of Sincerity
Condition Achieve max streak of 30 days10K