Do you know how i can solve the following python code?

$($ChatGPT doesn't help in this situation.$)$

Given is a list containing n integers. Your task is to calculate how many sublists have a sum of $0$ and additionally have the same first and last number in the sublist. The time complexity of the algorithm should be O$($n$).$ Implement a function count in the phyton file sublist that calculates the number of ways.

def count$($t$)$:

# TODO

if $\_\_$name$\_\_=="\_\_$main$\_\_"$:

print$($count$([2,3,-7,2]))$ # $1$

print$($count$([1,2,3,4,5]))$ # $0$

print$($count$([0,0,0,0,0]))$ # $15$

print$($count$([2,1,-2,1,-1,1,-1,1]))$ # $3$

Explanation: In the last test, the sublists are $[1,-2,1],[1,-2,1,-1,1],$ and $[1,-2,1,-1,1,-1,1].$