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: 2367 + 2751 + 138 + 6347 + 5297
Example Output: -12166

Example Input: 5193 - 9816 - 9875 - 1011 + 1147 + 5023
Example Output: 19725

Example Input: 8737 - 2978 - 6717
Example Output:
18432