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: 8552 - 1559 - 9197 - 2232
Example Output: 21540

Example Input: 6142 + 418 - 7535 - 7185 - 5518 + 7544 - 1019 - 938 - 9490
Example Output: 29865

Example Input: 2884 + 5333 - 1414 - 7562 - 1806
Example Output:
8333