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: 1884 + 3670 - 3893 + 782 + 3288 - 7463 + 3214

Output: 2286


Input: Consider Input: 242 - 3824 + 6718 - 4276 + 8975

Output: -7351


Input: Consider Input: 7467 + 4709 - 4609 - 6370 - 8858


Output: 22595