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: 6789 - 6255 + 3477 - 8628 + 3410 + 5875 + 7308 + 2357

Output: -755


Input: Consider Input: 3583 - 967 - 3552 + 7898 - 1248 + 6992 - 5291 + 819

Output: -1068


Input: Consider Input: 6045 - 817 - 277 + 9966 - 5161 - 7538 + 5314


Output: 4558