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: 9689 - 3967 - 2592 - 3020 - 6589
Example Output: 25857

Example Input: 9910 + 9584 - 6394 - 5927
Example Output: 12647

Example Input: 5800 + 1091 + 6451 + 8446 - 854 + 2893 + 9390
Example Output:
-21617