5 problems
| ID | Problem | Difficulty | Accepted | Solved | Status |
|---|---|---|---|---|---|
| 209 | 부호 처리 연습 (1) - Divisor Orthogonalityorthogonality | Platinum II | 35% | 21 | Not tried |
| 210 | 공평한 사다리타기 게임ladder | Ruby IV | 36% | 4 | Not tried |
| 214 | Extradimensional Cosmic Phenomenoncosmic | Ruby II | 50% | 2 | Not tried |
| 216 | 말랑말랑 계산 직관 트레이닝summation | Platinum V | 75% | 23 | Not tried |
| 221 | 多次元宇宙融合論ekdndbd | Ruby III | 16% | 4 | Not tried |
