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: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500
Example Output: -1201

Example Input: 298 + 1699 + 1367 + 5001
Example Output: -7769

Example Input: 4122 + 2573 - 3503 - 2655 + 1062 - 5817 - 5172 - 1485
Example Output:
19119