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: 5474 + 1234 - 4461 - 3865 + 7635 + 830 + 5965 - 7856 + 523
Example Output: 5469

Example Input: 1231 + 6657 - 8263
Example Output: 2837

Example Input: 9262 - 1775 + 4815 + 807 + 5923
Example Output:
-508