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: 7034 sottrazione 3627 aggiunta 3672 sottrazione 1253 sottrazione 3004 aggiunta 9672 sottrazione 5963 aggiunta 2898 sottrazione 4618
A:
4811