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: 2500 + 3268 - 574 + 5695 - 2143 + 404 - 196
Example Output: -3954

Example Input: 1626 + 448 + 6034
Example Output: -4856

Example Input: 7323 + 404 + 9939 + 8643 + 8812 - 5165
Example Output:
-15310