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'.

Example Input: 934 aggiunta 9809 sottrazione 2003 aggiunta 8743 aggiunta 7095
Example Output: 24578

Example Input: 6757 aggiunta 2461 aggiunta 968
Example Output: 10186

Example Input: 4644 sottrazione 1471 aggiunta 9088 aggiunta 2598 aggiunta 3702 aggiunta 287
Example Output:
18848