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: 9806 + 7051 + 6703 + 4233 - 276

Output: -7905


Input: Consider Input: 5813 + 3746 + 8938 + 7100 + 6584 + 4863 - 8837 - 1669 - 6199


Output: -8713