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![[English] LeetCode 920. Number of Music Playlists](https://i.ytimg.com/vi/QAUyCOUtSHM/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLAqcY3icGGEM0HZohUrxOt9EDT1Ew)
![[Chinese] LeetCode 920. Number of Music Playlists](https://i.ytimg.com/vi/h3iw4x2GPJI/hq720.jpg?sqp=-oaymwEXCNAFEJQDSFryq4qpAwkIARUAAIhCGAE=&rs=AOn4CLB0yHnvaq4dxoyXiAgJVrFQo0njIQ)
