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: 9483 sottrazione 8559 sottrazione 233
Example Output: 691

Example Input: 4013 aggiunta 6407 aggiunta 4038
Example Output: 14458

Example Input: 1451 aggiunta 4090 sottrazione 5408
Example Output:
133