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: 8754 sottrazione 3161 sottrazione 1221 aggiunta 5993 sottrazione 8940 sottrazione 6903 sottrazione 7711 sottrazione 9812 sottrazione 3166
Output:
-26167