Run error (Maximum Subarray sum)

What should I do to solve the run error in the IDE. It is showing Run error for all cases

hi @yobasu2015
this is happening because of
Constraints

1 <= N <= 100000

1 <= t <= 20

-100000000 <= A[i] <= 100000000

as you can see array size is 10^5 and you have made array of size 10^3 only

and elements of array are also crossing range of int
so instead of int you have to use long long

i hope you understand