def round_up_to_two_digits(number):
    num_str = str(number)
    if len(num_str) <=  2:
        return int(num_str)
    else:
        return int(num_str[:2]) +  1 if int(num_str[2]) >=  5 else int(num_str[:2])


rounded_number = round_up_to_two_digits(9876543210)
print(rounded_number)  # Output:  99