%EC%B0%BD%EC%9B%90%ED%85%8C%EB%9D%BC%ED%94%BC%E2%9C%A0%20%E3%80%90optop10%C2%B8%E2%93%92%EF%BC%AF%EF%BC%AD%E3%80%91%E2%9D%87%EC%B0%BD%EC%9B%90%ED%9B%84%EB%B6%88%EC%B6%9C%EC%9E%A5%E2%99%AC%EC%B0%BD%EC%9B%90%EB%A3%B8%EC%8B%B8%EB%A1%B1%E2%9C%A7%EC%B0%BD%EC%9B%90op%20%EC%B0%BD%EC%9B%90%EA%B1%B4%EB%A7%88%20%EC%B0%BD%EC%9B%90%ED%92%80%EC%8B%B8%EB%A1%B1