Canonicalized Input Description:

An integer N (1 ≤ N ≤ 1000), representing some quantity or size.
A list of tuples P of size N, where each tuple contains two integers (x, y) representing coordinates, and both x and y are between -10^6 and 10^6.
A string S with a length between 1 and 1000, containing only characters from the set {'L', 'R', 'U', 'D'}.

### Example Input:

```
4
1 2
3 4
-1 -2
-3 -4
LRUD
```

### Function Signature:
Write a function f(N, P, S) that takes in the input.
```python
def f(N: int, P: List[Tuple[int, int]], S: str):
    '''
    N: an integer
    P: a list of tuples with integer coordinates
    S: a string
    '''
```