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: 569 + 2078 + 2757 - 9211
Example Output: 4945

Example Input: 3428 - 8444 - 2270 - 3241 - 1368 - 8884 - 6840 - 5265
Example Output: 39740

Example Input: 5945 + 75 + 1733 + 6281 - 179 - 2939 + 5867
Example Output:
-4893