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: 1471 - 7798 + 6514 + 8053 + 9926

Output: -15224


Input: Consider Input: 1860 - 6675 + 8615 + 485 + 6302 - 3385 + 1568

Output: -5050


Input: Consider Input: 8743 - 9288 + 3095


Output: 14936