%EC%9D%BC%EC%82%B0%ED%85%8C%EB%9D%BC%ED%94%BC%E2%94%B4%20%E3%80%90optop10.c0%D0%BC%E3%80%91%20%EC%9D%BC%EC%82%B0%EB%A7%88%EC%82%AC%EC%A7%80%E2%99%95%EC%9D%BC%EC%82%B0%EC%8A%88%EC%96%BC%20%EC%9D%BC%EC%82%B0%EC%85%94%EC%B8%A0%EB%A3%B8%E2%9C%AE%EC%9D%BC%EC%82%B0%EC%95%88%EB%A7%88%E2%9C%B6%EC%9D%BC%EC%82%B0%EC%98%A4%ED%94%BC