Could not understand dp approach

hello, sir/ ma’am I could not understand the DP approach for the problem Also I tried the Fibonacci code but it failed in 2 test cases. kindly help me out.

hi @gurkirat2600,
corrected and commented https://ide.codingblocks.com/s/661449

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.