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: 6763 - 8006 - 6381 - 8852 + 6218 + 3788 + 7296
Example Output: 12700

Example Input: 6567 + 2835 + 6725
Example Output: -2993

Example Input: 6554 + 6246 + 5383 + 6788 + 2961 + 2724 - 5522 - 8979 - 4207
Example Output:
1160