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: 10 sottrazione 7
Example output: 3
Example explanation: Here, 'sottrazione' represents the subtraction operation. So, the answer is 3 (10-7=3).
Q: 3628 sottrazione 9435 sottrazione 2452 sottrazione 3663 aggiunta 8247 aggiunta 173 aggiunta 8584 sottrazione 6557
A:
-1475