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: 6818 - 9528 + 3365 - 496 + 1035 - 9444 + 2617 - 5541 - 2219
Example Output: 27029

Example Input: 4993 - 9334 - 5415 + 8531 - 5640 + 896 + 3114 - 1984
Example Output: 14825

Example Input: 730 + 7585 - 9902 - 6809 + 286 + 9412 + 9282 - 3941 - 4046
Example Output:
-1137