Does not understand the input condtraints

i have write my code it will working good in my compiler but here i cant understand the first constraints i.e. t what is the significance of t here cant understand about test case how it effect our code and output

hi @ansarirehaan2925_b13ac9c75c4c49d0
refer https://www.youtube.com/watch?v=Q1TYVUEr-wY

code -->

I hope I’ve cleared your doubt. I ask you to please rate your experience here
Your feedback is very important. It helps us improve our platform and hence provide you
the learning experience you deserve.

On the off chance, you still have some questions or not find the answers satisfactory, you may reopen
the doubt.