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: 2269 + 7840 - 467 - 5626
Example Output: 522

Example Input: 7744 - 1859 - 3667 + 1907 - 2807
Example Output: 14170

Example Input: 2040 - 3481 - 7847 - 8853 - 2887
Example Output:
25108

