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: 2969 - 5770 - 665 + 516 - 1172 + 4904 - 384
Example Output: 5540

Example Input: 136 + 9772 - 2848 - 4980 + 6156 - 883 + 5407 + 3211
Example Output: -15699

Example Input: 5579 - 9608 - 3424 - 7819 + 9023 - 9164 + 9300 + 996 + 4703
Example Output:
11572