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: 9051 - 8971 + 6555 - 1135 - 4091 + 9374 + 9487 + 1868
Example Output: -4036

Example Input: 2113 - 9339 + 3752 + 8710 + 3541 + 3240 + 6148 + 2019
Example Output: -15958

Example Input: 5747 - 3631 - 8250
Example Output:
17628