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: 2103 sottrazione 96 aggiunta 4372 aggiunta 6362 sottrazione 5400 aggiunta 830 sottrazione 3633 aggiunta 4236 sottrazione 7052
A:
1722