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: 3238 + 2914 + 4122

Output: -3798


Input: Consider Input: 7403 - 3327 + 5889 + 1034 + 1607 - 313

Output: 2513


Input: Consider Input: 6409 - 1586 + 4265 - 4876 - 8825 - 6724


Output: 24155