Count XOR Even Pairs

Write a function `find_even_pair` that takes a list of integers as input and returns the number of pairs of integers in the list whose XOR operation results in an even number.

The XOR operation between two integers results in an even number if both integers are either even or odd.

#### Example Usage
```python [main.nopy]
find_even_pair([5, 4, 7, 2, 1])  # Output: 4
find_even_pair([7, 2, 8, 1, 0, 5, 11])  # Output: 9
find_even_pair([1, 2, 3])  # Output: 1
```

#### Constraints
- The input list will contain at least two integers.
- The integers in the list will be non-negative.
def find_even_pair(A):
    """
    Count the number of pairs of integers in the list A whose XOR results in an even number.

    Args:
    A (list): A list of integers.

    Returns:
    int: The count of pairs whose XOR is even.
    """
    # Initialize the count of pairs
    count = 0
    # Iterate through all pairs in the list
    for i in range(len(A)):
        for j in range(i + 1, len(A)):
            # Check if the XOR of the pair is even
            # Placeholder for the condition
            pass
    # Return the count of such pairs
    return count
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