An integer N (1 ≤ N ≤ 100), representing some quantity or size.  
A list of four integers P, where each integer p_X (1 ≤ p_X ≤ 100) represents a price.  
A list of four integers T, where each integer t_X (1 ≤ t_X ≤ 100) represents a quantity.

### Example Input:

```
10
1 2 3 4
1 2 4 8
```

### Function Signature:
Write a function f(N, P, T) that takes in the input. 
def f(N: int, P: List[int], T: List[int]):
    '''
    N: an integer
    P: a list of four integers
    T: a list of four integers
    '''