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: 1573 + 2934 + 9701

Output: -11062


Input: Consider Input: 5299 - 8968 + 5239 + 1119

Output: 7909


Input: Consider Input: 7747 - 3985 - 7225 + 9063 + 4771


Output: 5123