
    Write a function that extracts the first digit from the daily patient count in an emergency room to help identify traffic pattern categories, where the leading digit serves as a quick indicator of daily patient volume classification. The function should process any positive integer representing total daily arrivals and return its first (leftmost) digit, which will be used in the hospital's rapid capacity assessment system.
    

    
def first_Digit(n):
    """
    Write a function that extracts the first digit from the daily patient count in an emergency room to help identify traffic pattern categories, where the leading digit serves as a quick indicator of daily patient volume classification. The function should process any positive integer representing total daily arrivals and return its first (leftmost) digit, which will be used in the hospital's rapid capacity assessment system.
    

    """
def first_Digit(n):
    """
    Write a function that extracts the first digit from the daily patient count in an emergency room to help identify traffic pattern categories, where the leading digit serves as a quick indicator of daily patient volume classification. The function should process any positive integer representing total daily arrivals and return its first (leftmost) digit, which will be used in the hospital's rapid capacity assessment system.
    

    """
    while n >= 10:
        n = n / 10
    return int(n)