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: 7930 - 2835 - 1925 - 6613
Example Output: 19303

Example Input: 6492 - 3901 + 3666 + 9196 - 3917 - 133
Example Output: 1581

Example Input: 6385 + 2852 + 441 + 5217 - 235 - 2392 + 3068
Example Output:
-2566