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: 6874 + 7308 - 3041
Example Output: 2607

Example Input: 2036 + 7313 - 8908 - 1870 - 5159 + 5945 + 5006 + 635 + 5551
Example Output: -6477

Example Input: 3213 + 2838 + 6060 - 7638 + 7776 + 6987 + 1982 - 2662
Example Output:
-12130