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: 9982 + 267 - 3418 + 8741 - 63 - 1771 + 4720

Output: 1506


Input: Consider Input: 1309 + 4949 - 6121 + 1772 + 5896 - 2517 + 803


Output: -3473