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: 169 + 4940 + 7593 - 4532 + 2433 - 9730 - 6448 - 3026 - 2882
Example Output: 11821

Example Input: 1724 - 4426 - 960 - 8997 - 5797 + 8037 - 7699 + 3023
Example Output: 18543

Example Input: 5398 - 1206 + 5040 + 6022
Example Output:
-4458