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: 1592 - 2894 - 9980 + 4503 - 4006 - 8338 - 6314 + 4860 + 6836

Output: 16925


Input: Consider Input: 3284 - 2372 - 6880

Output: 12536


Input: Consider Input: 6541 + 6289 + 6656 + 4316 - 8753 - 8033 - 5571 - 5183


Output: 16820