def add_commas(num: int) -> str:
    """Adds commas to an integer in the international number format

    - 1000 -> 1,000
    - 100000 -> 100,000
    - 1000000 -> 1,000,000

    Args:
        num (int): The number

    Returns:
        str: The number with commas
    """
    return "{:,}".format(num)