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: 1320 + 3923 - 1080 - 3521 - 8998 + 4479 - 2559 - 7680
Example Output: 16756

Example Input: 5539 + 616 - 1640 - 7665 - 8787 - 5104 + 8431 + 9502
Example Output: 10186

Example Input: 7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011
Example Output:
1622