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: 9864 - 5325 - 3230 - 5129 + 7733 + 3498 - 9250
Example Output: 21567

Example Input: 7589 + 532 + 6349 + 56
Example Output:
652