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: 5799 + 5384 + 4924 + 5003 + 983 + 2274 - 5524
Example Output: -7245

Example Input: 6375 - 981 + 8096
Example Output:
-740