> For the complete documentation index, see [llms.txt](https://seunghyun-kim-1.gitbook.io/my-knowledge-library/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://seunghyun-kim-1.gitbook.io/my-knowledge-library/jetbrains-academy/kotlin-basics/coffee-machine/keep-track-of-the-supplies.md).

# Keep track of the supplies

Stage 5/6: Keep track of the supplies