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: 4054 + 5873 - 3926 - 2524 + 5551 - 1721
Example Output: 801

Example Input: 6355 - 3589 + 7310 - 5161 + 9803
Example Output: -2008

Example Input: 5665 + 3782 - 3158 + 104 + 785 + 8821 - 1688 - 5895
Example Output:
2914