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: 2269 + 7840 - 467 - 5626
Example Output: 522

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

Example Input: 8488 - 2275 + 2123 + 1142 - 6196 + 6613 - 7095
Example Output:
14176