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: 3909 - 4736 + 2593 + 3592
Example Output: 2460

Example Input: 8155 + 6800 - 6839 - 8047 + 3270
Example Output: 12971

Example Input: 7799 - 1819 - 2541 - 8234 - 5595 + 8304 - 1169 - 1711 - 1707
Example Output:
22271