# Introduction In this challenge, we will help Wayne figure out if he can successfully return to Earth from the space lounge. Wayne needs to occupy a specific position in the queue, but some stubborn individuals may resist changing their positions. We need to determine if Wayne can reach his position and calculate the number of possible queue arrangements that allow him to return to Earth. The solution should take into account the height requirements and apply modular arithmetic to handle large numbers.

Click the virtual machine below to start practicing