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: 4331 - 362 - 8646 - 8722 + 6424 + 4083 - 579 + 4561

Output: 7572


Input: Consider Input: 86 - 2166 - 8519 - 7184 - 362 - 2203 + 1579 - 1133 + 3978

Output: 16096


Input: Consider Input: 9803 - 4683 - 4472 + 4944


Output: 14014