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: 1626 + 448 + 6034

Output: -4856


Input: Consider Input: 1420 - 1910 - 3500 + 9535 + 3807 - 5009 - 1271 - 3426

Output: 3194


Input: Consider Input: 2508 + 2806 + 4837


Output: -5135