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: 7298 + 5069 + 5167 + 9387 - 6886
Example Output: -5439

Example Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290
Example Output: -3369

Example Input: 2354 + 5192 + 5717 - 1833 + 9672 - 3565
Example Output:
-12829