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: 2605 - 3453 + 5543 + 2400 + 8799 + 3298 + 4981 + 9739 - 178
Example Output: -28524

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

Example Input: 4997 - 6364 - 2354 + 8900 + 4699 - 3901 - 5688
Example Output:
9705