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: 8354 + 2602 + 1315
Example Output: 4437

Example Input: 938 + 566 + 5270 + 5634 - 7451 - 114
Example Output: -2967

Example Input: 1086 - 1736 - 4112
Example Output:
6934