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: 9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868
Example Output: -4036

Example Input: 1471 + 6113 + 3177 - 2507 - 2358 + 6654
Example Output: -9608

Example Input: 4982 - 3493 + 9035 + 9335 + 1294 + 3479 + 272 + 5566 + 3409
Example Output:
-23915