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: 7169 + 1918 - 7501 + 5160 + 9033 - 3341 + 4286
Example Output: -2386

Example Input: 6694 + 8723 - 1592 + 7366 + 9388
Example Output: -17191

Example Input: 5279 - 2949 - 9227 - 4200 - 3399 - 5680 - 9769 + 7051 + 2369
Example Output:
31083