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: 3306 aggiunta 5341 sottrazione 149 sottrazione 6637 sottrazione 2412 sottrazione 7053 sottrazione 3305 sottrazione 727
Output:
-11636