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: 2306 - 650 - 3209
Example Output: 6165

Example Input: 9808 + 7071 + 9458 - 8326 - 6406 - 6771 - 1321 + 4712
Example Output: 11391

Example Input: 5251 - 6080 - 8084 + 3023
Example Output:
16392