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: 6946 + 6834 - 1169 + 9756 + 2063 - 4750 - 425 + 1121 + 8155
Example Output: -14639

Example Input: 1078 + 2128 + 513 + 5898 - 8020
Example Output: 559

Example Input: 9132 - 6132 + 2208
Example Output:
13056