maximum weight difference problem showing wrong answer

general
1

can anyone please tell why it is showing wrong answer … CodeChef: Practical coding for everyone

2

The logic behind this code is

1 . Sort the array in ascending order

2 . Calculate the sum of all digits as sum

2 . Calculate the sum of k digits from start as sum1

3 . Calculate the sum of k digits from end as sum2

4 . Answer=MaxOf((sum1-(sum-sum1)),(sum2-(sum-sum2)))