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: 5462 - 3916 + 9462 - 8867 - 7357
Example Output: 16140

Example Input: 5371 + 2365 + 9586 - 6312 - 8369 - 7840 - 1823
Example Output: 17764

Example Input: 4860 - 5621 - 159 - 3788
Example Output:
14428