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

Example Input: 5709 + 8211 + 3945 + 1143 - 7258
Example Output: -332

Example Input: 7870 - 7726 + 1508 + 8722 - 3005 - 7091
Example Output:
15462