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: 6017 sottrazione 6074 sottrazione 5981 aggiunta 3604 sottrazione 862 sottrazione 6719 sottrazione 4314 aggiunta 9051 aggiunta 2052
Output:
-3226