%ED%99%94%EC%84%B1%EA%B1%B4%EB%A7%88%E2%92%B5%20%E3%80%90optop10%CB%9B%EF%BD%83o%EF%BD%8D%E3%80%91%20%ED%99%94%EC%84%B1%EC%95%88%EB%A7%88%EB%B0%A9%20%ED%99%94%EC%84%B1%EC%98%A4%ED%94%BC%E2%9C%88%ED%99%94%EC%84%B1%EC%8A%88%EC%96%BC%20%ED%99%94%EC%84%B1%ED%9B%84%EB%B6%88%EC%B6%9C%EC%9E%A5%20%ED%99%94%EC%84%B1%ED%85%8C%EB%9D%BC%ED%94%BC