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: 1673 - 3914 + 8016 + 5937 - 8915 + 4818
Example Output: -4269

Example Input: 8600 - 7082 + 49 + 8639 - 7036
Example Output: 14030

Example Input: 6584 + 5157 + 5417 - 3765 - 8975 - 5842 - 7432 - 6688 - 8801
Example Output:
37513