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: 5610 - 3034 + 9312 + 7337 + 2731 + 8581 + 5926 - 2102 + 2137
Example Output: -25278

Example Input: 473 - 2568 + 9771 - 2525 + 3277 + 261 - 8230 + 6021
Example Output: -5534

Example Input: 9101 - 9577 + 8052 + 3122
Example Output:
7504