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: 7291 - 941 - 33 + 3812 + 4851 - 8716 - 6838 - 740
Example Output: 15896

Example Input: 5321 - 5114 + 7476 + 1962
Example Output: 997

Example Input: 8619 + 5750 - 1175
Example Output:
4044