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: 7208 + 2074 + 2796 - 8783
Example Output: 11121

Example Input: 8025 - 6991 - 3299 + 9670 - 3471
Example Output: 12116

Example Input: 5982 - 2969 + 324 + 4909
Example Output:
3718