[제2회] p=3인 상상행렬의 불능조건 전기현 0 1870 0 0 2022.05.02 12:21 ![Screenshot 2022-05-02 at 12.44.58.png](https://freshrimpsushi.com/community/data/editor/2205/2615581243_1651463118.3423.png "Screenshot 2022-05-02 at 12.44.58.png") 0 0