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: 4486 + 7884 - 172 + 2615

Output: -5841


Input: Consider Input: 1058 + 9899 - 1446 + 9756 - 4149 + 9032 + 3729 - 8368 - 7327


Output: -10068