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: 4287 + 3355 + 4251 + 7433 + 7069
Example Output: -17821

Example Input: 9485 + 6349 - 1527 - 4730 - 5865 + 851 - 7415 - 3548 + 2868
Example Output: 22502

Example Input: 174 + 4122 - 7330 + 2866 - 9602 - 6518
Example Output:
16636