In this task you will be given an arithmetic operation and you have to find its answer. The symbols of operators '+' and '-' has been swapped i.e you need to perform subtraction when you see a '+' symbol and  addition in case of '-' symbol.

Example Input: 3394 - 2316 - 9713
Example Output: 15423

Example Input: 395 - 3060 - 445 + 3450 + 3365
Example Output: -2915

Example Input: 3881 + 9828 - 47 + 8832 - 7651 + 4657 + 3298 + 9744
Example Output:
-24780