%EB%A7%88%ED%8F%AC%EB%A7%88%EC%82%AC%EC%A7%80%EF%BD%96%20%E3%80%90optop10.%EF%BD%83o%D0%BC%E3%80%91%20%EB%A7%88%ED%8F%AC%EC%98%A4%ED%94%BC%E2%9C%A9%EB%A7%88%ED%8F%AC%EC%98%A4%ED%94%BC%E2%9C%93%EB%A7%88%ED%8F%AC%EC%85%94%EC%B8%A0%EB%A3%B8%E2%9C%B9%EB%A7%88%ED%8F%AC%EC%98%A4%ED%94%BC%20%EB%A7%88%ED%8F%AC%EC%98%A4%ED%94%BC