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: 7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011
Example Output: 1622

Example Input: 6639 - 5724 - 3521 - 6709 - 6185 + 6067 + 9560 - 9829 + 8371
Example Output: 14609

Example Input: 8457 + 7168 - 2564 - 7734 - 329 + 1304 - 2076
Example Output:
12688