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: 7646 + 8509 - 4372 - 9840 - 6377 - 2924 + 869
Example Output: 21781

Example Input: 8341 + 2746 - 2959 - 9678 + 5173 + 317
Example Output: 12742

Example Input: 9590 + 7905 + 3797 + 8285 + 7696 - 5453 - 2363 + 9954
Example Output:
-20231