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: 4264 - 4438 + 3871 + 7585 - 540 - 3455 - 6016
Example Output: 7257

Example Input: 8513 - 7119 - 47
Example Output: 15679

Example Input: 2527 - 5665 + 2034 - 2292 - 569 + 6842 - 5434 + 5661 - 3058
Example Output:
5008