An integer n (13 ≤ n ≤ 10,000,000).

The input consists of multiple datasets. The end of input is indicated by a line containing a single zero. The number of datasets is no more than 2000.

### Example Input:

```
13
14
15
16
17
18
19
20
10000
0
```

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