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: 8600 - 7082 + 49 + 8639 - 7036
Example Output: 14030

Example Input: 2045 - 2088 - 8387 + 5185 + 2275 - 1337 - 2494 - 1644 + 9737
Example Output: 798

Example Input: 3517 - 2468 - 5175 - 2468 + 4311
Example Output:
9317