%EA%B4%80%EC%95%85%ED%85%8C%EB%9D%BC%ED%94%BC%E2%9C%A7%20%E3%80%90optop10%CB%9Bc%D0%BEm%E3%80%91%20%EA%B4%80%EC%95%85%EB%A7%88%EC%82%AC%EC%A7%80%20%EA%B4%80%EC%95%85op%E2%99%9E%EA%B4%80%EC%95%85op%E2%9C%A2%EA%B4%80%EC%95%85op%E2%99%AC%EA%B4%80%EC%95%85%EC%98%A4%ED%94%BC