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: 1656 - 2355 + 4098 + 8586 + 7634 + 9427 + 9429

Output: -35163


Input: Consider Input: 1808 - 5352 - 8697 + 5058 + 8777 + 8089 - 9688 + 9784

Output: -6163


Input: Consider Input: 2591 - 5867 - 9565


Output: 18023