An even integer \(N\) (2 ≤ \(N\) ≤ 1000).

The input ends with a single zero which should not be processed.

### Example Input:
```
2
4
6
8
10
52
0
```

### Function Signature:
Write a function f(inputs) that takes in a list of tuples, each containing an even integer \(N\).
```python
def f(inputs: List[int]):
    '''
    inputs: a list of even integers
    '''
```