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: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286
Example Output: -2386

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

Example Input: 80 + 2221 - 2001 + 6657
Example Output:
-6797