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: 6368 + 9565 - 7042 - 1940 - 9960
Example Output: 15745

Example Input: 1312 - 814 - 8592 - 4040 - 5158 + 6817
Example Output: 13099

Example Input: 7470 + 6694 + 9784 - 9952 + 5859 + 1433
Example Output:
-6348