Wrong output coming

#1

for input-
4
1 2 3 4
output should be 6, but it is coming 4

Please help

#2

refer to this code ur code requires some update

#3

I got the top down approach, I want bottom up solution, also specifically , what’s wrong in my code, Please help in that

#4

i hope u have understood the approach since the question has been resolved from ur end