Maximum subarray sum

#1
#2

You have not mentioned what exactly is your doubt.
Also check the constraints
Constraints

1 <= N <= 100000

1 <= t <= 20

-100000000 <= A[i] <= 100000000

But you have restricted the size of your array to 1000. So this may case runtime error on submission.
Increase array size to 100000

#3

my code is not giving the right answer due to input can you please help me on how to use test cases in the code . how to input them

#4

You did not take the input for test cases.
First take input the number of testcases t. It is the number of time your code’s logic will run.
Handle test case input like this:

int t;
cin>>t;
while(t–)
{
//Take input N and the array
//Rest part of your code(The logic)

}

This loop will run separately for each test case.

#5

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