One testcase failing

#1

run time error in testcase zero. i cant figure out why

#2

Hi @itida_99
Run time error in your code is because of array initializing. You have fixed the size of array as 4. Instead you should take array as a[n] after taking input n from user. After that you are computing sum considering size of subarray only as 1, 2, and 3 but if n>=4 sum 0 can be achieved in a subarray of size more than 3. For example : when n is 6 and a[6]={-1, 2, 3, -7, 2} sum is 0 if we consider last 4 elements.

You have to use the following approach :

  1. Calculate the prefix sum of the array
  2. Then there are 2 conditions when there is sub array with sum 0 that is when element of prefix sum
    1). Either repeats or
    2). Or prefix it is 0.
#3

but the question specifies that 1<=n<=4

#4

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