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: 8739 - 8064 - 7000 + 6709
Example Output: 17094

Example Input: 1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784
Example Output: -6163

Example Input: 825 - 766 - 6006 + 2280 + 687 - 8632 - 296 - 6481 + 7331
Example Output:
12708