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: 6694 + 8723 - 1592 + 7366 + 9388
Example Output: -17191

Example Input: 9808 + 7071 + 9458 - 8326 - 6406 - 6771 - 1321 + 4712
Example Output: 11391

Example Input: 5527 - 35 - 9988 + 7417 - 5498
Example Output:
13631