Given a 2D array $A$ with $n$ rows and $m$ columns, and two integers $x$ and $y$, calculate the sum of the elements on the two diagonals that pass through the element at row $x$ and column $y$ ($A_{x, y}$).
### Input
- The first line contains 4 integers $n, m, x, y$.
- The next $n$ lines each contain $m$ integers representing the array $A$.
### Output
- Calculate the sum of the elements lying on the two diagonals that pass through the element at row $x$ and column $y$ ($A_{x, y}$).
### Constraints
- $1 \le n, m \le 100$.
- $1 \le x \le n$, $1 \le y \le m$.
- $|A_{i,j}| \le 100$.
### Example
Input:
Input:
```
3 4 2 2
1 -2 3 2
4 -5 9 0
3 3 2 -2
```
Output:
```
4
```
Note: $1 + 3 + -5 + 3 + 2 = 4$
**1** -2 **3** 2
4 **-5** 9 0
**3** 3 **2** -2
