%EC%95%88%EB%8F%99%EC%95%88%EB%A7%88%E2%92%A2%20%E3%80%90optop10.%EF%BD%83%EF%BC%AF%EF%BC%AD%E3%80%91%E2%9C%A7%EC%95%88%EB%8F%99%EC%98%A4%ED%94%BC%E2%9C%81%EC%95%88%EB%8F%99%EA%B1%B4%EB%A7%88%E2%9C%BA%EC%95%88%EB%8F%99%ED%92%80%EC%8B%B8%EB%A1%B1%20%EC%95%88%EB%8F%99%EC%98%A4%ED%94%BC%20%EC%95%88%EB%8F%99%EA%B1%B4%EB%A7%88