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: 7099 + 7754 - 6005 + 852 - 2187 + 4606 - 6703
Example Output: 8782

Example Input: 1626 + 448 + 6034
Example Output: -4856

Example Input: 4137 + 4834 - 5882 - 2634 - 378 - 1523 - 5717 - 8283 + 6851
Example Output:
16869