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: 7025 + 6005 + 6548 - 4628
Example Output: -900

Example Input: 9806 + 3365 + 4506 + 7148 - 8080 + 5035 + 2028 + 7278
Example Output: -11474

Example Input: 5262 + 4244 + 3075 - 7025 - 4804 + 2373 + 9378 - 3844
Example Output:
1865