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: 5773 - 2989 + 8993 + 6702 + 2237 - 1402 - 4236 - 1857
Example Output: -1675

Example Input: 5473 - 4337 - 6499 - 9119
Example Output: 25428

Example Input: 5452 - 2183 + 5069 - 1082 - 9347 - 8002 + 3261 - 3722
Example Output:
21458