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: 1616 - 440 + 11
Example Output: 2045

Example Input: 1185 - 6431 + 1326 - 2840 - 9276
Example Output: 18406

Example Input: 1994 - 932 - 158 + 8715 + 4818 + 2602 + 4808
Example Output:
-17859