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: 7308 + 5010 + 6882

Output: -4584


Input: Consider Input: 8552 - 1559 - 9197 - 2232

Output: 21540


Input: Consider Input: 2149 - 3388 + 2448 + 9740 - 1738 + 2813


Output: -7726