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: 5774 + 1888 + 5355 - 6957 - 7140 - 9762
Example Output: 22390

Example Input: 3171 - 3678 - 3096 - 5842 - 3188
Example Output: 18975

Example Input: 8238 + 9817 - 2474 + 3673 + 9625 - 849 + 1441
Example Output:
-12995