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: 3384 - 2434 - 5567
Example Output: 11385

Example Input: 4264 - 4438 + 3871 + 7585 - 540 - 3455 - 6016
Example Output: 7257

Example Input: 9550 - 3861 - 9856 + 2851 + 4251
Example Output:
16165