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: 8721 sottrazione 5557 sottrazione 8098 sottrazione 4799 sottrazione 5092 sottrazione 8516 sottrazione 1999 sottrazione 5871 sottrazione 3800
Output:
-35011