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: 6063 + 9874 + 5939 - 5013 + 791
Example Output: -5528

Example Input: 8354 + 2602 + 1315
Example Output: 4437

Example Input: 6829 - 7749 - 8118 - 4230 - 9150 + 2104 + 5906 + 969
Example Output:
27097