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: 9909 - 1362 + 9804 + 5190 + 8223 - 3758
Example Output: -8188

Example Input: 4444 + 4575 - 2114 - 4099
Example Output: 6082

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