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

Example Input: 8571 - 5985 + 8912
Example Output: 5644

Example Input: 7477 - 3932 + 8473 - 7040 - 7705 + 4780 + 1503 + 9469 - 4218
Example Output:
6147