Money Change Problem

#1

Problem link:
https://online.codingblocks.com/app/player/115374/content/73642/5203/code-challenge

Code link:

I am getting TLE for this code. Is it possible to optimize this code?

#2

I cannot able to view the problem in this link. Pls give problem as commented in ur code.

#3

What are the constraints of n and k and everything else

#4

Code link with Question Commented: