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: 5474 + 1234 - 4461 - 3865 + 7635 + 830 + 5965 - 7856 + 523
Example Output: 5469

Example Input: 6800 + 2564 + 8444 + 1912
Example Output: -6120

Example Input: 5884 - 1747 - 8569 + 1876 - 2986 - 5791
Example Output:
23101