Instructions: 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: 5659 sottrazione 3951 sottrazione 2307 sottrazione 9669 aggiunta 6766 aggiunta 7346
Output:
3844