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: 5709 + 8211 + 3945 + 1143 - 7258
Example Output: -332

Example Input: 3847 - 13 + 3533 + 3162 + 2287 + 9753 + 3110
Example Output:
-17985