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: 6763 - 8006 - 6381 - 8852 + 6218 + 3788 + 7296
Example Output: 12700

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

Example Input: 6820 - 387 + 8290 - 9203 - 9292 + 9249 - 3079
Example Output:
11242