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: 9672 sottrazione 2371 sottrazione 3747 aggiunta 9580 aggiunta 5344 sottrazione 14 aggiunta 1800 sottrazione 4364 aggiunta 334
A:
16234