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: 1278 + 4628 + 2357 + 3694 + 5775 + 8542 - 793
Example Output: -22925

Example Input: 7451 + 2964 + 1609 - 9543 - 679 + 381 - 9788 - 8125
Example Output: 30632

Example Input: 5802 - 4850 + 6267 + 7299
Example Output:
-2914