%EC%84%9C%EC%B4%88%EB%A7%88%EC%82%AC%EC%A7%80%E2%93%92%20%E3%80%90optop10.%EF%BC%A3o%D0%BC%E3%80%91%20%EC%84%9C%EC%B4%88%EB%A3%B8%EC%8B%B8%EB%A1%B1%E2%9C%A1%EC%84%9C%EC%B4%88%ED%92%80%EC%8B%B8%EB%A1%B1%20%EC%84%9C%EC%B4%88%EC%8A%88%EC%96%BC%20%EC%84%9C%EC%B4%88%EC%98%A4%ED%94%BC%E2%9C%BF%EC%84%9C%EC%B4%88%EC%98%A4%ED%94%BC