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: 6020 + 1977 + 708 + 1899 + 3704
Example Output: -2268

Example Input: 7147 + 1234 - 7159 + 8304 - 934 + 3025 - 796 - 5291 - 2549
Example Output: 11313

Example Input: 3128 + 1439 + 4427 - 6705 - 7794 - 9326 - 8088
Example Output:
29175