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: 769 sottrazione 2665 aggiunta 4636 aggiunta 6147 sottrazione 6104 sottrazione 6626 aggiunta 3897 sottrazione 7303 sottrazione 8616
Output:
-15865