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: 3186 + 271 - 7916
Example Output: 10831

Example Input: 4647 - 2106 + 6760 + 3296 - 9772
Example Output: 6469

Example Input: 7569 + 9369 + 9377 - 3212 + 8173 + 2988 - 7908
Example Output:
-11218