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: 3186 + 271 - 7916
Example Output: 10831

Example Input: 1561 - 5861 - 6887 - 8406 - 5941 - 3633
Example Output: 32289

Example Input: 4988 + 343 + 5875 - 2653 - 1902 - 6888 - 809 + 4979
Example Output:
6043