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: 3089 - 6778 - 3604 - 1052 - 1332
Example Output: 15855

Example Input: 8798 - 6887 - 9478 - 7713 + 8512 + 7926 - 8604 + 2947 + 7573
Example Output: 14522

Example Input: 1331 + 8807 - 2536 - 9196 + 805 - 4332 - 7891
Example Output:
15674