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: 3561 + 2090 - 1286 - 2259 - 7069 + 5058
Example Output: 7027

Example Input: 42 + 6517 - 146 + 304 - 4759 + 148 - 3822
Example Output: 1800

Example Input: 2349 - 9730 - 8231 + 6983 + 9097 + 6965 - 2760
Example Output:
25