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: 775 - 7609 + 2326 + 8760 + 4505

Output: -7207


Input: Consider Input: 3477 + 8970 + 2278 - 9906 - 106 - 208 - 1334

Output: 3783


Input: Consider Input: 6244 - 3528 - 4605 - 6396 - 3509 - 4073


Output: 28355