Definition: 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'.
Input: 2041 sottrazione 4988 aggiunta 1372 sottrazione 5016 sottrazione 9323 sottrazione 9200 aggiunta 8294 aggiunta 3815
Output:
-13005