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: 4266 - 8914 - 9115 - 7595 - 3820 + 191 + 3199 - 4910

Output: 35230


Input: Consider Input: 6763 - 8006 - 6381 - 8852 + 6218 + 3788 + 7296

Output: 12700


Input: Consider Input: 812 + 6106 - 2904 + 7738 + 7655 - 6987


Output: -10796