An integer N (1 ≤ N ≤ 2 × 10^5), representing some quantity or size.
A list of integers A of size N, where each integer is between 1 and 10^6.

### Example Input:

```
5
24 11 8 3 16
```

### Function Signature:
Write a function f(N, A) that takes in the input. 
def f(N: int, A: List[int]): 
    ''' 
    N: an integer 
    A: a list of integers
    '''