%EC%A2%85%EB%A1%9Cop%E3%8F%82%20%E3%80%90optop10.%EF%BC%A3%EF%BC%AF%EF%BC%AD%E3%80%91%20%EC%A2%85%EB%A1%9C%ED%92%80%EC%8B%B8%EB%A1%B1%E2%9C%B5%EC%A2%85%EB%A1%9C%EC%8A%88%EC%96%BC%E2%9C%A1%EC%A2%85%EB%A1%9C%ED%92%80%EC%8B%B8%EB%A1%B1%20%EC%A2%85%EB%A1%9C%EC%98%A4%ED%94%BC%E2%9C%91%EC%A2%85%EB%A1%9C%ED%85%8C%EB%9D%BC%ED%94%BC