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: 1256 - 3248 - 3709 - 3019
Example Output: 11232

Example Input: 2759 - 7972 - 7615 + 151
Example Output: 18195

Example Input: 29 - 7368 - 3524 - 7604 - 7961 - 4506 - 7285
Example Output:
38277