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: 1884 + 3670 - 3893 + 782 + 3288 - 7463 + 3214
Example Output: 2286

Example Input: 5630 - 3377 + 9205 - 4071 + 9580 - 7049
Example Output: 1342

Example Input: 2748 - 704 - 8669 + 5503 + 2687 + 6122 + 7870 - 8080 - 4817
Example Output:
2836