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: 4117 - 3380 - 4784
Example Output: 12281

Example Input: 1691 - 755 + 5734 - 4774 + 4915 - 7249 - 47
Example Output: 3867

Example Input: 8601 - 3414 - 1752 - 209 - 7559 - 2326 + 1070 + 4664
Example Output:
18127