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: 3071 - 5299 + 206 + 3214 + 6040 + 5785 - 6760 - 8070

Output: 7955


Input: Consider Input: 3097 + 17 - 8842 + 4949 + 8377 + 425 - 7128 + 6500

Output: -1201


Input: Consider Input: 3618 - 6894 - 1152 - 985 + 4287 - 6797 - 8676 + 2582 + 1608


Output: 19645