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: 3672 + 2445 + 4715 - 5145 - 8515 + 3793 - 3753
Example Output: 10132

Example Input: 4110 - 9440 + 557 + 7868 - 6315 + 2518 - 9049 + 3905 + 2052
Example Output: 12014

Example Input: 493 + 614 - 9966 + 3073
Example Output:
6772