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: 5778 + 1647 - 2800 + 3747 + 3449 + 90 - 2891 + 685
Example Output: 1851

Example Input: 808 - 4935 + 288 + 9758 + 8690 + 384 + 4674 + 5769 - 8736
Example Output: -15084

Example Input: 9107 + 1049 + 7533 + 2628 + 1833
Example Output:
-3936