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: 5409 - 5550 + 3864 - 5911 + 5222

Output: 7784


Input: Consider Input: 2862 - 964 + 1644

Output: 2182


Input: Consider Input: 5319 + 6612 + 6884 + 3405 - 5492


Output: -6090