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: 5328 + 9563 + 7711
Example Output: -11946

Example Input: 1691 + 5097 - 6519
Example Output:
3113