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: 9085 + 2845 - 6159 + 1404 + 2110 - 8797

Output: 17682


Input: Consider Input: 2045 - 2088 - 8387 + 5185 + 2275 - 1337 - 2494 - 1644 + 9737

Output: 798


Input: Consider Input: 5435 + 7301 - 4265 - 4661 + 5810


Output: 1250