%EC%9D%B5%EC%82%B0%EC%98%A4%ED%94%BC%E3%82%AF%20%E3%80%90optop10.%E2%93%92%CE%B8%EF%BC%AD%E3%80%91%20%EC%9D%B5%EC%82%B0%EC%85%94%EC%B8%A0%EB%A3%B8%20%EC%9D%B5%EC%82%B0%EC%B6%9C%EC%9E%A5%EC%95%88%EB%A7%88%E2%99%9D%EC%9D%B5%EC%82%B0%EC%95%84%EB%A1%9C%EB%A7%88%E2%9C%82%EC%9D%B5%EC%82%B0%EB%A3%B8%EC%8B%B8%EB%A1%B1%E2%9C%82%EC%9D%B5%EC%82%B0%EC%98%A4%ED%94%BC