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: 2500 + 3268 - 574 + 5695 - 2143 + 404 - 196

Output: -3954


Input: Consider Input: 5758 + 9179 - 1765 - 4142 - 8736

Output: 11222


Input: Consider Input: 832 + 5339 - 8766 + 5654 - 4356


Output: 2961