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: 5527 - 35 - 9988 + 7417 - 5498
Example Output: 13631

Example Input: 7555 + 8285 + 7132 + 9363 - 3515
Example Output: -13710

Example Input: 145 - 2904 + 8028 - 6058 + 5185 + 6987
Example Output:
-11093