DO YOU KNOW PERFECT HEADER FILE FOR THESE CODE ? 🤔🧐

Question

https://code.sololearn.com/cOcS4gEhNuR8/?ref=app

Answer 1

The <queue> header is where std::deque is defined

https://en.cppreference.com/w/cpp/container/deque

Answer 2

We can also use <deque> header file