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: 3083 - 4468 - 7941 + 7484 + 2789

Output: 5219


Input: Consider Input: 8294 + 6661 + 4555 + 6171

Output: -9093


Input: Consider Input: 9500 + 2841 + 4782 + 2478 + 7762 - 2071 + 9348 + 6421


Output: -22061