Earlier quoted context omitted.
I think it just means taking the input as an integer and then separating out the “ones place”and “tens place” using integer division and modulo operator. E.g., ones = number % 10 tens = number // 10 do_print = (ones + tens) == 10
That's what my solution after the parsing would be. OP mentioned reading from a file, which you would only be able to use after string conversion to ints.
if toInt(number) % 10 != 0
print number
else print number + "(" + number[0] + "," + number[1] + ")"