In this task you will be given an arithmetic operation in Italian and you have to find its answer. The operations 'addition' and 'subtraction' have been replaced with their italian translations i.e you need to perform addition when you see 'aggiunta' and subtraction in case of 'sottrazione'.

Example Input: 934 aggiunta 9809 sottrazione 2003 aggiunta 8743 aggiunta 7095
Example Output: 24578

Example Input: 5337 aggiunta 8611 sottrazione 2618 aggiunta 2107
Example Output: 13437

Example Input: 5704 sottrazione 4187 aggiunta 2046
Example Output:
3563