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: 5527 - 35 - 9988 + 7417 - 5498

Output: 13631


Input: Consider Input: 7163 + 3916 + 4926 + 2532 - 2743 - 5389 + 7290

Output: -3369


Input: Consider Input: 8897 + 4670 + 7946 + 5627 - 9577 + 5484 - 1953 + 6315


Output: -9615