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: 9909 - 1362 + 9804 + 5190 + 8223 - 3758
Example Output: -8188

Example Input: 6881 + 1331 - 470 + 6067 - 9323
Example Output: 9276

Example Input: 7427 + 8795 - 4104 + 7720 - 6667
Example Output:
1683