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: 1123 - 8657 + 3476 - 5278 + 717 - 1557 + 6614 + 1549
Example Output: 4259

Example Input: 9625 - 1139 - 9303
Example Output: 20067

Example Input: 2300 - 5024 - 9314 + 3635 - 5767 + 7678 + 9968 + 6731
Example Output:
-5607