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: 5774 + 1888 + 5355 - 6957 - 7140 - 9762

Output: 22390


Input: Consider Input: 6055 - 7226 + 1875 + 7504 - 1238 - 4445 + 412 - 5560

Output: 14733


Input: Consider Input: 1837 - 6362 - 226


Output: 8425