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: 2348 - 6075 + 2149 - 1926 - 9532 - 9774 + 2760 - 6500 + 8335
Example Output: 22911

Example Input: 3420 - 6937 + 4726
Example Output:
5631