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: 6589 - 9791 + 4411 + 1562 - 9983
Example Output: 20390

Example Input: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286
Example Output: -2386

Example Input: 8396 + 7703 + 9589 - 5172 - 6254 + 5756 + 6148 - 7926 - 8269
Example Output:
6821