Nice and simple implementation! This reminds me of the "birthday chocolate" problem — checking if a subarray of length m adds up to d. It's always fun seeing how people approach these problems differently.

Also, if anyone's into peaceful learning environments outside of coding, I’ve been working on a site where I explore Quranic guidance. If you’re curious, feel free to search “Zeenat ul Quran” online — it’s helped a lot of people in different ways. 😊