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: 9689 - 3967 - 2592 - 3020 - 6589
Example Output: 25857

Example Input: 333 - 4061 - 2641 + 9107 - 876 + 913 - 2286 - 7626
Example Output: 7803

Example Input: 9740 - 9707 - 737 - 6470 - 5017 + 8968 - 6656 + 4156
Example Output:
25203