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: 5292 + 3623 + 7450

Output: -5781


Input: Consider Input: 2348 - 6075 + 2149 - 1926 - 9532 - 9774 + 2760 - 6500 + 8335

Output: 22911


Input: Consider Input: 2953 - 4085 + 6386 - 8656 - 9670


Output: 18978