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: 6812 sottrazione 3152 sottrazione 2478 aggiunta 1542 aggiunta 8067 aggiunta 5408 aggiunta 2026 sottrazione 804 sottrazione 7346
A:
10075