
    Write a function that analyzes pairs of transaction flags in a fraud detection system and counts how many pairs of transactions exhibit normal behavior patterns. Two transactions are considered normal when their security flags, when XORed together, result in an even number, helping identify legitimate transaction pairs in the banking system.
    

    
def find_even_pair(A):
    """
    Write a function that analyzes pairs of transaction flags in a fraud detection system and counts how many pairs of transactions exhibit normal behavior patterns. Two transactions are considered normal when their security flags, when XORed together, result in an even number, helping identify legitimate transaction pairs in the banking system.
    

    """
def find_even_pair(A):
    """
    Write a function that analyzes pairs of transaction flags in a fraud detection system and counts how many pairs of transactions exhibit normal behavior patterns. Two transactions are considered normal when their security flags, when XORed together, result in an even number, helping identify legitimate transaction pairs in the banking system.
    

    """
    count = 0
    for i in range(0, len(A)):
        for j in range(i + 1, len(A)):
            if (A[i] ^ A[j]) % 2 == 0:
                count += 1
    return count