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: 7270 + 4138 - 1696 - 5719 - 9735 + 2360

Output: 17922


Input: Consider Input: 8838 + 1241 - 4918 - 8353 - 4691 - 5880

Output: 31439


Input: Consider Input: 1805 - 4570 - 1613 - 1432


Output: 9420