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: 1737 + 1422 + 9162 - 7244 + 6133
Example Output: -7736

Example Input: 597 + 4303 + 4507 + 4779 - 8079
Example Output: -4913

Example Input: 7736 - 8508 - 2072 + 7578 + 7224 - 9957 + 1765 + 7505
Example Output:
4201