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: 5279 - 2949 - 9227 - 4200 - 3399 - 5680 - 9769 + 7051 + 2369

Output: 31083


Input: Consider Input: 6567 + 2835 + 6725

Output: -2993


Input: Consider Input: 3681 + 1303 + 5556 + 9895 - 5012 - 6662


Output: -1399