How to improve time complexity?

Question

This code is correct but it shows time limit exceeded in the codechef oj. I want some help from to improve its time complexity. What is the wrong in this code?
https://code.sololearn.com/conR9PjAKP0W/?ref=app

Answer 1

UDDHAV PROG
You can find the question statement of this code in "Codechef July long challenge 2021"

Answer 2

Tell us what to enter

Answer 3

Ok