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: 5355 + 1451 - 3895 + 6213 + 743
Example Output: 843

Example Input: 5113 - 8987 - 452
Example Output: 14552

Example Input: 1751 - 4680 + 1935 + 3257 + 8339 - 8927 - 4123 - 9535 + 3714
Example Output:
11771