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: 6091 - 9741 + 8943 + 4033 - 2984 + 4984 + 8503
Example Output: -7647

Example Input: 1123 - 8657 + 3476 - 5278 + 717 - 1557 + 6614 + 1549
Example Output: 4259

Example Input: 8915 + 8709 - 6716 + 4326
Example Output:
2596