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: 2269 + 7840 - 467 - 5626

Output: 522


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

Output: 11222


Input: Consider Input: 3089 - 9018 + 8007 + 3440 + 7554 - 8952 + 3294 - 5963


Output: 4727