4 problems
| ID | Problem | Difficulty | Accepted | Solved | Status |
|---|---|---|---|---|---|
| 59 | 분수 지수fraction | Gold I | 55% | 6 | Not tried |
| 81 | 세제곱수의 합cubesum | Platinum III | 44% | 7 | Not tried |
| 486 | Easy Divisor Problemeasydivisorproblem | Ruby III | 15% | 2 | Not tried |
| 618 | 7 x 13 = 28multiply | Bronze IV | 89% | 102 | Not tried |
