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: 3084 aggiunta 9944 sottrazione 5735 sottrazione 9408
Example Output: -2115

Example Input: 2431 sottrazione 4910 aggiunta 3990
Example Output: 1511

Example Input: 8663 aggiunta 2247 aggiunta 6245
Example Output:
17155