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: 7344 + 9206 + 3989 + 5648 - 7620
Example Output: -3879

Example Input: 2480 - 8716 + 5571 - 504 - 4905 - 392 - 5105 + 906
Example Output: 15625

Example Input: 8900 - 6626 - 7672 + 5386 - 6757 + 9375
Example Output:
15194