uml 다이어그램: diagrams net 구글드라이브 공유
[https://app.diagrams.net/#G1XT9kR-76RbnrD1ByEQZZiqajK5VSGCx_](https://viewer.diagrams.net/?border=0&highlight=0000ff&edit=_blank&layers=1&nav=1&title=OnlineJudgeFE&open=Uhttps%3A%2F%2Fdrive.google.com%2Fuc%3Fid%3D1XT9kR-76RbnrD1ByEQZZiqajK5VSGCx_%26export%3Ddownload)
https://app.diagrams.net/#G1XT9kR-76RbnrD1ByEQZZiqajK5VSGCx_