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: 1780 - 963 - 3786 - 8938 + 5127 + 4125 + 8911 + 9677
Example Output: -12373

Example Input: 694 + 4432 - 9053
Example Output: 5315

Example Input: 5774 + 1888 + 5355 - 6957 - 7140 - 9762
Example Output:
22390