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: 496 + 5072 + 6259 + 1493 + 4824 + 2052 + 4751 - 8038
Example Output: -15917

Example Input: 220 - 5891 + 2603 + 7125 - 7551 - 3288
Example Output: 7222

Example Input: 5037 - 1506 - 1225
Example Output:
7768