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: 2010 + 6744 - 5577 - 1182 + 8811

Output: -6786


Input: Consider Input: 6567 + 2835 + 6725

Output: -2993


Input: Consider Input: 6567 + 2835 + 6725


Output: -2993