%EC%A7%84%EC%B2%9C%ED%85%8C%EB%9D%BC%ED%94%BC%E3%81%B8%20%E3%80%90optop10%C2%B8%EF%BD%83%EF%BC%AF%EF%BD%8D%E3%80%91%E2%9C%B8%EC%A7%84%EC%B2%9COP%20%EC%A7%84%EC%B2%9C%EC%B6%9C%EC%9E%A5%EC%98%A4%ED%94%BC%20%EC%A7%84%EC%B2%9COP%E2%9C%A0%EC%A7%84%EC%B2%9C%EB%A7%88%EC%82%AC%EC%A7%80%E2%9C%94%EC%A7%84%EC%B2%9C%EC%98%A4%ED%94%BC