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: 961 + 1754 - 8392 + 2659 - 495 + 358

Output: 5077


Input: Consider Input: 8552 - 1559 - 9197 - 2232

Output: 21540


Input: Consider Input: 5569 - 5161 + 9240 + 391 + 2756 - 7345 + 4533


Output: 1155