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: 5856 - 8885 - 8510 + 7879 + 2100
Example Output: 13272

Example Input: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286
Example Output: -2386

Example Input: 7175 + 1937 + 3970 - 1676 + 6816 + 6431 + 8360 + 8585 - 7172
Example Output:
-20076