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: 1876 aggiunta 393 sottrazione 1652 sottrazione 6887 sottrazione 5533 sottrazione 7448 sottrazione 7516 sottrazione 8330 sottrazione 1691
Output:
-36788