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: 4066 aggiunta 2407 sottrazione 5648 aggiunta 4140 sottrazione 4703 aggiunta 9606 aggiunta 6035 sottrazione 9229 aggiunta 616
Output:
7290