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: 8711 + 5319 - 3967 - 9285 + 2276

Output: 14368


Input: Consider Input: 1075 - 4704 - 8582 + 2960 + 8010 + 617 - 4972 + 2013

Output: 5733


Input: Consider Input: 8731 - 9025 - 5093 + 2403 - 8549


Output: 28995