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: 155 + 7497 + 4675 - 2329 - 9080 - 5510 - 2336 + 8701
Example Output: -1463

Example Input: 5856 - 8885 - 8510 + 7879 + 2100
Example Output: 13272

Example Input: 1794 - 2979 + 7992
Example Output:
-3219