https://github.com/VISUALBoostcampCV/CodingStudy/blob/9ed8106eac7ca136d6942cfe2a84b1364c0efad1/%EB%89%B4%EC%8A%A4%20%ED%81%B4%EB%9F%AC%EC%8A%A4%ED%84%B0%EB%A7%81/sehwa.py#L21
Activity