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.

Ex Input:
5758 + 9179 - 1765 - 4142 - 8736

Ex Output:
11222


Ex Input:
5774 + 1888 + 5355 - 6957 - 7140 - 9762

Ex Output:
22390


Ex Input:
8102 - 8182 + 8940 + 5337 - 6467 + 1481 - 1875 - 2654

Ex Output:

11522