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: 736 - 6527 - 3681 - 7834 + 893 + 9709 - 7544 - 3726
Example Output: 19446

Example Input: 1078 + 2128 + 513 + 5898 - 8020
Example Output: 559

Example Input: 1558 + 9487 + 6303 - 8467 + 26 - 5293 - 1867 + 6552
Example Output:
-5183