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

Example Input: 6589 - 9791 + 4411 + 1562 - 9983
Example Output: 20390

Example Input: 8301 - 6117 + 9106 + 2168 - 4036 - 2644 + 8999
Example Output:
825