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: 8455 + 5516 - 2131 + 6151 + 6314 + 9308 + 5493

Output: -22196


Input: Consider Input: 7202 - 7230 - 3695 + 2434 + 5934 + 5439 + 687 + 2011

Output: 1622


Input: Consider Input: 8069 - 8972 + 3848 + 1070 + 8874 + 9647


Output: -6398