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: 3123 + 9519 - 2864 + 9440 - 756 + 252
Example Output: -12468

Example Input: 5076 + 7454 + 1010 + 606 + 89 + 701 - 8042 + 5219
Example Output:
-1961