Bug Report for arranging-coins

Bug Report for https://neetcode.io/problems/arranging-coins

Please describe the bug below and include any steps to reproduce the bug or screenshots if possible.

Code does not run at all when run / submit is pressed.

<img width="663" height="503" alt="Image" src="https://github.com/user-attachments/assets/e2168bc6-8e5b-465c-a45d-143508667906" />