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

Example Input: 6800 + 2564 + 8444 + 1912
Example Output: -6120

Example Input: 5071 - 1599 + 6542 - 5710 - 7120 - 243 + 588 + 4232 + 6620
Example Output:
1761