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: 8025 - 6991 - 3299 + 9670 - 3471
Example Output: 12116

Example Input: 7409 + 7579 + 4759 + 5088
Example Output: -10017

Example Input: 438 - 5356 - 8949 + 6084 + 5792 - 3919 - 4502
Example Output:
11288