> For the complete documentation index, see [llms.txt](https://programming.arora-aditya.com/leetcode/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://programming.arora-aditya.com/leetcode/depth-first-search.md).

# Depth first search

- [841. Keys and Rooms](https://programming.arora-aditya.com/leetcode/depth-first-search/841.-keys-and-rooms.md)