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: 7961 - 5474 + 4234 - 4358 - 7627 - 2291 - 9771 + 9867 - 813
Example Output: 24194

Example Input: 826 - 6501 - 223 + 9761 - 8863
Example Output: 6652

Example Input: 8269 - 4767 - 2916
Example Output:
15952