Thank you so much for your alternate method to this. i also need to find why it didn't work so as to not make the error again

I have written some DP code for finding the maximum amount of cash Nikhil can get, it qualifies the first 3 test cases, but fails with a "Wrong Answer" for the rest of the cases. Could anyone explain what I am doing wrong here, and if the whole approach itself is right or wrong?

12038138.cpp · GitHub