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

Example Input: 2318 + 1498 - 953 + 3290 + 1371 + 6933 + 7553 + 7283 + 889
Example Output: -25546

Example Input: 6848 - 438 + 9881 + 5559 - 4814 + 8014 + 3039 - 1917 - 2569
Example Output:
-9907