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: 5409 - 5550 + 3864 - 5911 + 5222
Example Output: 7784

Example Input: 6570 + 2902 + 9219 - 6971 + 6886 + 765
Example Output: -6231

Example Input: 2756 - 3861 + 1122 + 6297 + 4582 - 1178
Example Output:
-4206