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: 3254 - 200 + 4450 - 6393 - 2480 + 4564 + 9650
Example Output: -6337

Example Input: 9240 - 5321 + 7584 - 9605 + 9674 - 5556 + 6400
Example Output: 6064

Example Input: 1968 + 7734 - 8600 - 3679 - 1874
Example Output:
8387