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: 6042 + 4328 - 5171 + 23 + 4485 + 8072 + 4298
Example Output: -9993

Example Input: 1344 + 7632 - 4322
Example Output: -1966

Example Input: 887 + 7786 - 3138 - 648 - 7215
Example Output:
4102