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: 2269 + 7840 - 467 - 5626
Example Output: 522

Example Input: 5316 + 506 - 8402
Example Output: 13212

Example Input: 7509 - 4281 + 6102 + 3335 + 3143 - 1693 + 2082 + 2797 - 3792
Example Output:
-184