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.

Input: Consider Input: 4773 + 2177 - 7850 + 9364 - 3636 + 4921

Output: -203


Input: Consider Input: 5088 - 9353 - 2772 + 3908 + 9196 + 4709

Output: -600


Input: Consider Input: 4164 - 7952 - 8342 - 9586 + 7161 - 7772 - 8685 + 8850 + 343


Output: 30147