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: 5690 sottrazione 9656 aggiunta 1232
Example Output: -2734

Example Input: 6043 aggiunta 2492 aggiunta 3435
Example Output: 11970

Example Input: 2831 aggiunta 8461 aggiunta 4192
Example Output:
15484