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: 240 - 438 + 497 - 5901 - 1960 + 4782 + 6400 - 4055
Example Output: 915

Example Input: 6676 - 9649 - 7452 - 9594 - 2722 + 2516 - 3096
Example Output:
36673